55137886 has 16 divisors (see below), whose sum is σ = 87292800. Its totient is φ = 26048088.

The previous prime is 55137883. The next prime is 55137899. The reversal of 55137886 is 68873155.

55137886 = 133² + 134² + ... + 551².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55137883) 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, 14191 + ... + 17653.

It is an arithmetic number, because the mean of its divisors is an integer number (5455800).

Almost surely, 2^55137886 is an apocalyptic number.

55137886 is a deficient number, since it is larger than the sum of its proper divisors (32154914).

55137886 is a wasteful number, since it uses less digits than its factorization.

55137886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903.

The product of its digits is 201600, while the sum is 43.

The square root of 55137886 is about 7425.4889401305. The cubic root of 55137886 is about 380.6127832321.

The spelling of 55137886 in words is "fifty-five million, one hundred thirty-seven thousand, eight hundred eighty-six".