56731601 has 8 divisors (see below), whose sum is σ = 60474600. Its totient is φ = 53033728.

The previous prime is 56731573. The next prime is 56731607. The reversal of 56731601 is 10613765.

It can be written as a sum of positive squares in 4 ways, for example, as 19228225 + 37503376 = 4385^2 + 6124^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56731601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56731607) 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, 8666 + ... + 13731.

It is an arithmetic number, because the mean of its divisors is an integer number (7559325).

Almost surely, 2^56731601 is an apocalyptic number.

It is an amenable number.

56731601 is a deficient number, since it is larger than the sum of its proper divisors (3742999).

56731601 is a wasteful number, since it uses less digits than its factorization.

56731601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22563.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 56731601 is about 7532.0383031421. The cubic root of 56731601 is about 384.2451076382.

The spelling of 56731601 in words is "fifty-six million, seven hundred thirty-one thousand, six hundred one".