56651001 has 32 divisors (see below), whose sum is σ = 86952960. Its totient is φ = 32472000.

The previous prime is 56650991. The next prime is 56651003. The reversal of 56651001 is 10015665.

It is not a de Polignac number, because 56651001 - 2⁵ = 56650969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56651003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76290 + ... + 77028.

It is an arithmetic number, because the mean of its divisors is an integer number (2717280).

Almost surely, 2^56651001 is an apocalyptic number.

It is an amenable number.

56651001 is a deficient number, since it is larger than the sum of its proper divisors (30301959).

56651001 is a wasteful number, since it uses less digits than its factorization.

56651001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 56651001 is about 7526.6859240970. The cubic root of 56651001 is about 384.0630525260.

Adding to 56651001 its reverse (10015665), we get a palindrome (66666666).

It can be divided in two parts, 5665 and 1001, that added together give a palindrome (6666).

The spelling of 56651001 in words is "fifty-six million, six hundred fifty-one thousand, one".