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151369 = 229661
BaseRepresentation
bin100100111101001001
321200122021
4210331021
514320434
63124441
71200211
oct447511
9250567
10151369
11a37a9
1273721
1353b8a
143d241
152ecb4
hex24f49

151369 has 4 divisors (see below), whose sum is σ = 152260. Its totient is φ = 150480.

The previous prime is 151357. The next prime is 151379. The reversal of 151369 is 963151.

151369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 963151 = 7137593.

It can be written as a sum of positive squares in 2 ways, for example, as 131769 + 19600 = 363^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 151369 - 25 = 151337 is a prime.

It is a super-2 number, since 2×1513692 = 45825148322, which contains 22 as substring.

It is a Duffinian number.

151369 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (151339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102 + ... + 559.

It is an arithmetic number, because the mean of its divisors is an integer number (38065).

2151369 is an apocalyptic number.

It is an amenable number.

151369 is a deficient number, since it is larger than the sum of its proper divisors (891).

151369 is an equidigital number, since it uses as much as digits as its factorization.

151369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890.

The product of its digits is 810, while the sum is 25.

The square root of 151369 is about 389.0616917662. The cubic root of 151369 is about 53.2940813617.

The spelling of 151369 in words is "one hundred fifty-one thousand, three hundred sixty-nine".

Divisors: 1 229 661 151369