55695571 has 4 divisors (see below), whose sum is σ = 55728592. Its totient is φ = 55662552.

The previous prime is 55695551. The next prime is 55695583. The reversal of 55695571 is 17559655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55695571 - 2¹⁷ = 55564499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55695551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13836 + ... + 17401.

It is an arithmetic number, because the mean of its divisors is an integer number (13932148).

Almost surely, 2^55695571 is an apocalyptic number.

55695571 is a deficient number, since it is larger than the sum of its proper divisors (33021).

55695571 is a wasteful number, since it uses less digits than its factorization.

55695571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33020.

The product of its digits is 236250, while the sum is 43.

The square root of 55695571 is about 7462.9465360540. The cubic root of 55695571 is about 381.8917006115.

The spelling of 55695571 in words is "fifty-five million, six hundred ninety-five thousand, five hundred seventy-one".