55086870 has 32 divisors (see below), whose sum is σ = 135286272. Its totient is φ = 14347872.

The previous prime is 55086859. The next prime is 55086887. The reversal of 55086870 is 7868055.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20062 + ... + 22641.

It is an arithmetic number, because the mean of its divisors is an integer number (4227696).

Almost surely, 2^55086870 is an apocalyptic number.

55086870 is an abundant number, since it is smaller than the sum of its proper divisors (80199402).

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

55086870 is a wasteful number, since it uses less digits than its factorization.

55086870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42756.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 55086870 is about 7422.0529504983. The cubic root of 55086870 is about 380.4953604409.

The spelling of 55086870 in words is "fifty-five million, eighty-six thousand, eight hundred seventy".