56465641 has 4 divisors (see below), whose sum is σ = 56483284. Its totient is φ = 56448000.

The previous prime is 56465627. The next prime is 56465671. The reversal of 56465641 is 14656465.

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 5271616 + 51194025 = 2296^2 + 7155^2 .

It is a 4-Lehmer number, since φ(56465641) divides (56465641-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 56465641 - 2⁵ = 56465609 is a prime.

It is a super-2 number, since 2×56465641² = 6376737227081762, which contains 22 as substring.

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 56465641.

It is not an unprimeable number, because it can be changed into a prime (56465611) 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, 2520 + ... + 10921.

It is an arithmetic number, because the mean of its divisors is an integer number (14120821).

Almost surely, 2^56465641 is an apocalyptic number.

56465641 is the 4753-rd centered pentagonal number.

It is an amenable number.

56465641 is a deficient number, since it is larger than the sum of its proper divisors (17643).

56465641 is a wasteful number, since it uses less digits than its factorization.

56465641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17642.

The product of its digits is 86400, while the sum is 37.

The square root of 56465641 is about 7514.3623149273. The cubic root of 56465641 is about 383.6437147608.

It can be divided in two parts, 5 and 6465641, that added together give a palindrome (6465646).

The spelling of 56465641 in words is "fifty-six million, four hundred sixty-five thousand, six hundred forty-one".