55155824 has 40 divisors (see below), whose sum is σ = 110899152. Its totient is φ = 26554880.

The previous prime is 55155809. The next prime is 55155829. The reversal of 55155824 is 42855155.

It is a super-2 number, since 2×55155824² = 6084329842237952, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55155829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53942 + ... + 54954.

Almost surely, 2^55155824 is an apocalyptic number.

It is an amenable number.

55155824 is an abundant number, since it is smaller than the sum of its proper divisors (55743328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55155824 is a wasteful number, since it uses less digits than its factorization.

55155824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1139 counting only the distinct ones).

The product of its digits is 40000, while the sum is 35.

The square root of 55155824 is about 7426.6967084970. The cubic root of 55155824 is about 380.6540536564.

The spelling of 55155824 in words is "fifty-five million, one hundred fifty-five thousand, eight hundred twenty-four".