55420887570 has 64 divisors (see below), whose sum is σ = 140906894976. Its totient is φ = 13902382080.

The previous prime is 55420887539. The next prime is 55420887611. The reversal of 55420887570 is 7578802455.

55420887570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998592 + ... + 1052628.

It is an arithmetic number, because the mean of its divisors is an integer number (2201670234).

Almost surely, 2^55420887570 is an apocalyptic number.

55420887570 is an abundant number, since it is smaller than the sum of its proper divisors (85486007406).

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

55420887570 is a wasteful number, since it uses less digits than its factorization.

55420887570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56075.

The product of its (nonzero) digits is 3136000, while the sum is 51.

The spelling of 55420887570 in words is "fifty-five billion, four hundred twenty million, eight hundred eighty-seven thousand, five hundred seventy".