56640841 has 4 divisors (see below), whose sum is σ = 56736000. Its totient is φ = 56545684.

The previous prime is 56640827. The next prime is 56640851. The reversal of 56640841 is 14804665.

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 a cyclic number.

It is not a de Polignac number, because 56640841 - 2¹¹ = 56638793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56640797 and 56640806.

It is not an unprimeable number, because it can be changed into a prime (56640811) 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, 46681 + ... + 47878.

It is an arithmetic number, because the mean of its divisors is an integer number (14184000).

Almost surely, 2^56640841 is an apocalyptic number.

It is an amenable number.

56640841 is a deficient number, since it is larger than the sum of its proper divisors (95159).

56640841 is an equidigital number, since it uses as much as digits as its factorization.

56640841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95158.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 56640841 is about 7526.0109619904. The cubic root of 56640841 is about 384.0400913907.

The spelling of 56640841 in words is "fifty-six million, six hundred forty thousand, eight hundred forty-one".