55457070 has 16 divisors (see below), whose sum is σ = 133097040. Its totient is φ = 14788544.

The previous prime is 55457069. The next prime is 55457089. The reversal of 55457070 is 7075455.

It is a super-2 number, since 2×55457070² = 6150973225969800, which contains 22 as substring.

It is a congruent number.

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, 924255 + ... + 924314.

It is an arithmetic number, because the mean of its divisors is an integer number (8318565).

Almost surely, 2^55457070 is an apocalyptic number.

55457070 is an abundant number, since it is smaller than the sum of its proper divisors (77639970).

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

55457070 is a wasteful number, since it uses less digits than its factorization.

55457070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848579.

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 55457070 is about 7446.9503825392. The cubic root of 55457070 is about 381.3458051802.

The spelling of 55457070 in words is "fifty-five million, four hundred fifty-seven thousand, seventy".