55831845 has 16 divisors (see below), whose sum is σ = 91409472. Its totient is φ = 29084160.

The previous prime is 55831829. The next prime is 55831847. The reversal of 55831845 is 54813855.

It is not a de Polignac number, because 55831845 - 2⁴ = 55831829 is a prime.

It is a super-2 number, since 2×55831845² = 6234389832208050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55831847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42636 + ... + 43925.

It is an arithmetic number, because the mean of its divisors is an integer number (5713092).

Almost surely, 2^55831845 is an apocalyptic number.

It is an amenable number.

55831845 is a deficient number, since it is larger than the sum of its proper divisors (35577627).

55831845 is a wasteful number, since it uses less digits than its factorization.

55831845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86612.

The product of its digits is 96000, while the sum is 39.

The square root of 55831845 is about 7472.0709980567. The cubic root of 55831845 is about 382.2029134034.

The spelling of 55831845 in words is "fifty-five million, eight hundred thirty-one thousand, eight hundred forty-five".