55011570 has 32 divisors (see below), whose sum is σ = 133624512. Its totient is φ = 14492352.

The previous prime is 55011557. The next prime is 55011599. The reversal of 55011570 is 7511055.

It is a self number, because there is not a number n which added to its sum of digits gives 55011570.

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, 8557 + ... + 13536.

It is an arithmetic number, because the mean of its divisors is an integer number (4175766).

Almost surely, 2^55011570 is an apocalyptic number.

55011570 is an abundant number, since it is smaller than the sum of its proper divisors (78612942).

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

55011570 is a wasteful number, since it uses less digits than its factorization.

55011570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22186.

The product of its (nonzero) digits is 875, while the sum is 24.

The square root of 55011570 is about 7416.9784953173. The cubic root of 55011570 is about 380.3219109701.

The spelling of 55011570 in words is "fifty-five million, eleven thousand, five hundred seventy".