56895991 has 8 divisors (see below), whose sum is σ = 61525440. Its totient is φ = 52409088.

The previous prime is 56895989. The next prime is 56896019. The reversal of 56895991 is 19959865.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56895991 - 2¹ = 56895989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56895911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34806 + ... + 36403.

It is an arithmetic number, because the mean of its divisors is an integer number (7690680).

Almost surely, 2^56895991 is an apocalyptic number.

56895991 is a deficient number, since it is larger than the sum of its proper divisors (4629449).

56895991 is a wasteful number, since it uses less digits than its factorization.

56895991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71273.

The product of its digits is 874800, while the sum is 52.

The square root of 56895991 is about 7542.9431258627. The cubic root of 56895991 is about 384.6158894629.

The spelling of 56895991 in words is "fifty-six million, eight hundred ninety-five thousand, nine hundred ninety-one".