55624230 has 48 divisors (see below), whose sum is σ = 149295744. Its totient is φ = 14353920.

The previous prime is 55624211. The next prime is 55624243. The reversal of 55624230 is 3242655.

55624230 is a `hidden beast` number, since 5 + 5 + 624 + 2 + 30 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 55624194 and 55624203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7179 + ... + 12758.

It is an arithmetic number, because the mean of its divisors is an integer number (3110328).

Almost surely, 2^55624230 is an apocalyptic number.

55624230 is an abundant number, since it is smaller than the sum of its proper divisors (93671514).

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

55624230 is a wasteful number, since it uses less digits than its factorization.

55624230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19981 (or 19978 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 55624230 is about 7458.1653239922. The cubic root of 55624230 is about 381.7285746741.

Adding to 55624230 its reverse (3242655), we get a palindrome (58866885).

The spelling of 55624230 in words is "fifty-five million, six hundred twenty-four thousand, two hundred thirty".