55567788 has 24 divisors (see below), whose sum is σ = 130335408. Its totient is φ = 18425856.

The previous prime is 55567777. The next prime is 55567789. The reversal of 55567788 is 88776555.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 55567788.

It is not an unprimeable number, because it can be changed into a prime (55567789) 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, 9681 + ... + 14312.

It is an arithmetic number, because the mean of its divisors is an integer number (5430642).

Almost surely, 2^55567788 is an apocalyptic number.

It is an amenable number.

55567788 is an abundant number, since it is smaller than the sum of its proper divisors (74767620).

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

55567788 is a wasteful number, since it uses less digits than its factorization.

55567788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24193 (or 24191 counting only the distinct ones).

The product of its digits is 2352000, while the sum is 51.

The square root of 55567788 is about 7454.3804571540. The cubic root of 55567788 is about 381.5994174360.

The spelling of 55567788 in words is "fifty-five million, five hundred sixty-seven thousand, seven hundred eighty-eight".