56664271 has 4 divisors (see below), whose sum is σ = 56901600. Its totient is φ = 56426944.

The previous prime is 56664259. The next prime is 56664299. The reversal of 56664271 is 17246665.

It is a happy number.

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

It is not a de Polignac number, because 56664271 - 2⁷ = 56664143 is a prime.

It is a super-2 number, since 2×56664271² = 6421679215922882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56664271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56664211) 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, 118306 + ... + 118783.

It is an arithmetic number, because the mean of its divisors is an integer number (14225400).

Almost surely, 2^56664271 is an apocalyptic number.

56664271 is a deficient number, since it is larger than the sum of its proper divisors (237329).

56664271 is a wasteful number, since it uses less digits than its factorization.

56664271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237328.

The product of its digits is 60480, while the sum is 37.

The square root of 56664271 is about 7527.5674025544. The cubic root of 56664271 is about 384.0930379851.

The spelling of 56664271 in words is "fifty-six million, six hundred sixty-four thousand, two hundred seventy-one".