55451 has 6 divisors (see below), whose sum is σ = 61356. Its totient is φ = 49700.

The previous prime is 55441. The next prime is 55457. The reversal of 55451 is 15455.

It is a de Polignac number, because none of the positive numbers 2^k-55451 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (55457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 746 + ... + 816.

It is an arithmetic number, because the mean of its divisors is an integer number (10226).

2⁵⁵⁴⁵¹ is an apocalyptic number.

55451 is a deficient number, since it is larger than the sum of its proper divisors (5905).

55451 is an equidigital number, since it uses as much as digits as its factorization.

55451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 82 counting only the distinct ones).

The product of its digits is 500, while the sum is 20.

The square root of 55451 is about 235.4803601152. The cubic root of 55451 is about 38.1331891394.

The spelling of 55451 in words is "fifty-five thousand, four hundred fifty-one".