55470870 has 144 divisors (see below), whose sum is σ = 178824672. Its totient is φ = 11681280.

The previous prime is 55470859. The next prime is 55470901. The reversal of 55470870 is 7807455.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 106210 + ... + 106730.

It is an arithmetic number, because the mean of its divisors is an integer number (1241838).

Almost surely, 2^55470870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55470870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89412336).

55470870 is an abundant number, since it is smaller than the sum of its proper divisors (123353802).

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

55470870 is a wasteful number, since it uses less digits than its factorization.

55470870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 55470870 is about 7447.8768786816. The cubic root of 55470870 is about 381.3774340640.

The spelling of 55470870 in words is "fifty-five million, four hundred seventy thousand, eight hundred seventy".