55232940 has 48 divisors (see below), whose sum is σ = 176746752. Its totient is φ = 12624576.

The previous prime is 55232939. The next prime is 55232951. The reversal of 55232940 is 4923255.

55232940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55232940² = 6101355322087200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 55232898 and 55232907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65334 + ... + 66173.

It is an arithmetic number, because the mean of its divisors is an integer number (3682224).

Almost surely, 2^55232940 is an apocalyptic number.

It is an amenable number.

55232940 is an abundant number, since it is smaller than the sum of its proper divisors (121513812).

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

55232940 is a wasteful number, since it uses less digits than its factorization.

55232940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131526 (or 131524 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 55232940 is about 7431.8867052721. The cubic root of 55232940 is about 380.8313745982.

The spelling of 55232940 in words is "fifty-five million, two hundred thirty-two thousand, nine hundred forty".