56840961 has 8 divisors (see below), whose sum is σ = 76058784. Its totient is φ = 37758560.

The previous prime is 56840941. The next prime is 56840977. The reversal of 56840961 is 16904865.

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 56840961 - 2⁶ = 56840897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56840941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32871 + ... + 34556.

It is an arithmetic number, because the mean of its divisors is an integer number (9507348).

Almost surely, 2^56840961 is an apocalyptic number.

It is an amenable number.

56840961 is a deficient number, since it is larger than the sum of its proper divisors (19217823).

56840961 is a wasteful number, since it uses less digits than its factorization.

56840961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67711.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 56840961 is about 7539.2944630118. The cubic root of 56840961 is about 384.4918488557.

The spelling of 56840961 in words is "fifty-six million, eight hundred forty thousand, nine hundred sixty-one".