56909487 has 8 divisors (see below), whose sum is σ = 76066480. Its totient is φ = 37846080.

The previous prime is 56909483. The next prime is 56909491. The reversal of 56909487 is 78490965.

It is an interprime number because it is at equal distance from previous prime (56909483) and next prime (56909491).

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

It is not a de Polignac number, because 56909487 - 2² = 56909483 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 (56909483) 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, 21964 + ... + 24417.

It is an arithmetic number, because the mean of its divisors is an integer number (9508310).

Almost surely, 2^56909487 is an apocalyptic number.

56909487 is a deficient number, since it is larger than the sum of its proper divisors (19156993).

56909487 is a wasteful number, since it uses less digits than its factorization.

56909487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46793.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 56909487 is about 7543.8376838318. The cubic root of 56909487 is about 384.6462979655.

The spelling of 56909487 in words is "fifty-six million, nine hundred nine thousand, four hundred eighty-seven".