55377788 has 12 divisors (see below), whose sum is σ = 96964560. Its totient is φ = 27673632.

The previous prime is 55377781. The next prime is 55377793. The reversal of 55377788 is 88777355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55377781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9545 + ... + 14207.

It is an arithmetic number, because the mean of its divisors is an integer number (8080380).

Almost surely, 2^55377788 is an apocalyptic number.

It is an amenable number.

55377788 is a deficient number, since it is larger than the sum of its proper divisors (41586772).

55377788 is a wasteful number, since it uses less digits than its factorization.

55377788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7636 (or 7634 counting only the distinct ones).

The product of its digits is 1646400, while the sum is 50.

The square root of 55377788 is about 7441.6253600944. The cubic root of 55377788 is about 381.1639932121.

It can be divided in two parts, 55377 and 788, that added together give a palindrome (56165).

The spelling of 55377788 in words is "fifty-five million, three hundred seventy-seven thousand, seven hundred eighty-eight".