56861601 has 4 divisors (see below), whose sum is σ = 75815472. Its totient is φ = 37907732.

The previous prime is 56861599. The next prime is 56861603. The reversal of 56861601 is 10616865.

56861601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (56861599) and next prime (56861603).

It is a cyclic number.

It is not a de Polignac number, because 56861601 - 2¹ = 56861599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56861603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9476931 + ... + 9476936.

It is an arithmetic number, because the mean of its divisors is an integer number (18953868).

Almost surely, 2^56861601 is an apocalyptic number.

It is an amenable number.

56861601 is a deficient number, since it is larger than the sum of its proper divisors (18953871).

56861601 is a wasteful number, since it uses less digits than its factorization.

56861601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18953870.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 56861601 is about 7540.6631671226. The cubic root of 56861601 is about 384.5383819148.

The spelling of 56861601 in words is "fifty-six million, eight hundred sixty-one thousand, six hundred one".