55531045 has 16 divisors (see below), whose sum is σ = 68464368. Its totient is φ = 43223040.

The previous prime is 55531037. The next prime is 55531051. The reversal of 55531045 is 54013555.

It can be written as a sum of positive squares in 8 ways, for example, as 5997601 + 49533444 = 2449^2 + 7038^2 .

It is not a de Polignac number, because 55531045 - 2³ = 55531037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28647 + ... + 30523.

It is an arithmetic number, because the mean of its divisors is an integer number (4279023).

Almost surely, 2^55531045 is an apocalyptic number.

It is an amenable number.

55531045 is a deficient number, since it is larger than the sum of its proper divisors (12933323).

55531045 is a wasteful number, since it uses less digits than its factorization.

55531045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 55531045 is about 7451.9155255545. The cubic root of 55531045 is about 381.5152907659.

The spelling of 55531045 in words is "fifty-five million, five hundred thirty-one thousand, forty-five".