56995671 has 4 divisors (see below), whose sum is σ = 75994232. Its totient is φ = 37997112.

The previous prime is 56995637. The next prime is 56995681. The reversal of 56995671 is 17659965.

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

It is not a de Polignac number, because 56995671 - 2¹⁸ = 56733527 is a prime.

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 56995671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56995621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9499276 + ... + 9499281.

It is an arithmetic number, because the mean of its divisors is an integer number (18998558).

Almost surely, 2^56995671 is an apocalyptic number.

56995671 is a deficient number, since it is larger than the sum of its proper divisors (18998561).

56995671 is a wasteful number, since it uses less digits than its factorization.

56995671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18998560.

The product of its digits is 510300, while the sum is 48.

The square root of 56995671 is about 7549.5477347984. The cubic root of 56995671 is about 384.8403700966.

The spelling of 56995671 in words is "fifty-six million, nine hundred ninety-five thousand, six hundred seventy-one".