55310687 has 4 divisors (see below), whose sum is σ = 55353696. Its totient is φ = 55267680.

The previous prime is 55310677. The next prime is 55310693. The reversal of 55310687 is 78601355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55310687 - 2¹² = 55306591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55310617) 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, 19514 + ... + 22167.

It is an arithmetic number, because the mean of its divisors is an integer number (13838424).

Almost surely, 2^55310687 is an apocalyptic number.

55310687 is a deficient number, since it is larger than the sum of its proper divisors (43009).

55310687 is a wasteful number, since it uses less digits than its factorization.

55310687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43008.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 55310687 is about 7437.1155026663. The cubic root of 55310687 is about 381.0099794623.

The spelling of 55310687 in words is "fifty-five million, three hundred ten thousand, six hundred eighty-seven".