55571070 has 32 divisors (see below), whose sum is σ = 134017920. Its totient is φ = 14747040.

The previous prime is 55571063. The next prime is 55571071. The reversal of 55571070 is 7017555.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55571071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1941 + ... + 10719.

It is an arithmetic number, because the mean of its divisors is an integer number (4188060).

Almost surely, 2^55571070 is an apocalyptic number.

55571070 is an abundant number, since it is smaller than the sum of its proper divisors (78446850).

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

55571070 is a wasteful number, since it uses less digits than its factorization.

55571070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9000.

The product of its (nonzero) digits is 6125, while the sum is 30.

The square root of 55571070 is about 7454.6005929225. The cubic root of 55571070 is about 381.6069300896.

The spelling of 55571070 in words is "fifty-five million, five hundred seventy-one thousand, seventy".