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55368481 = 7210632
BaseRepresentation
bin1101001100110…
…1101100100001
310212012000021111
43103031230201
5103133242411
65254423321
71241424100
oct323155441
9125160244
1055368481
1129288183
1216661b41
13b617b1c
1474d4037
154cda721
hex34cdb21

55368481 has 9 divisors (see below), whose sum is σ = 64468881. Its totient is φ = 47414052.

The previous prime is 55368463. The next prime is 55368487. The reversal of 55368481 is 18486355.

The square root of 55368481 is 7441.

It is a perfect power (a square), and thus also a powerful number.

55368481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55368481 - 27 = 55368353 is a prime.

It is a super-2 number, since 2×553684812 = 6131337376494722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55368487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 51556 + ... + 52618.

It is an arithmetic number, because the mean of its divisors is an integer number (7163209).

Almost surely, 255368481 is an apocalyptic number.

55368481 is the 7441-st square number.

55368481 is the 3721-st centered octagonal number.

It is an amenable number.

55368481 is a deficient number, since it is larger than the sum of its proper divisors (9100400).

55368481 is an frugal number, since it uses more digits than its factorization.

55368481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140 (or 1070 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The cubic root of 55368481 is about 381.1426387295.

The spelling of 55368481 in words is "fifty-five million, three hundred sixty-eight thousand, four hundred eighty-one".

Divisors: 1 7 49 1063 7441 52087 1129969 7909783 55368481