56451601 has 4 divisors (see below), whose sum is σ = 56478132. Its totient is φ = 56425072.

The previous prime is 56451569. The next prime is 56451623. The reversal of 56451601 is 10615465.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16192576 + 40259025 = 4024^2 + 6345^2 .

It is a cyclic number.

It is not a de Polignac number, because 56451601 - 2⁵ = 56451569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56451601.

It is not an unprimeable number, because it can be changed into a prime (56451631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9766 + ... + 14431.

It is an arithmetic number, because the mean of its divisors is an integer number (14119533).

Almost surely, 2^56451601 is an apocalyptic number.

It is an amenable number.

56451601 is a deficient number, since it is larger than the sum of its proper divisors (26531).

56451601 is a wasteful number, since it uses less digits than its factorization.

56451601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26530.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 56451601 is about 7513.4280458390. The cubic root of 56451601 is about 383.6119148665.

The spelling of 56451601 in words is "fifty-six million, four hundred fifty-one thousand, six hundred one".