55442170 has 16 divisors (see below), whose sum is σ = 114052608. Its totient is φ = 19008720.

The previous prime is 55442147. The next prime is 55442197. The reversal of 55442170 is 7124455.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395946 + ... + 396085.

It is an arithmetic number, because the mean of its divisors is an integer number (7128288).

Almost surely, 2^55442170 is an apocalyptic number.

55442170 is an abundant number, since it is smaller than the sum of its proper divisors (58610438).

55442170 is a wasteful number, since it uses less digits than its factorization.

55442170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792045.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 55442170 is about 7445.9499058213. The cubic root of 55442170 is about 381.3116492620.

It can be divided in two parts, 554 and 42170, that added together give a palindrome (42724).

The spelling of 55442170 in words is "fifty-five million, four hundred forty-two thousand, one hundred seventy".