56013641 has 4 divisors (see below), whose sum is σ = 56030484. Its totient is φ = 55996800.

The previous prime is 56013631. The next prime is 56013647. The reversal of 56013641 is 14631065.

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 35046400 + 20967241 = 5920^2 + 4579^2 .

It is a cyclic number.

It is not a de Polignac number, because 56013641 - 2¹⁸ = 55751497 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 56013641.

It is not an unprimeable number, because it can be changed into a prime (56013647) 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, 1580 + ... + 10701.

It is an arithmetic number, because the mean of its divisors is an integer number (14007621).

Almost surely, 2^56013641 is an apocalyptic number.

It is an amenable number.

56013641 is a deficient number, since it is larger than the sum of its proper divisors (16843).

56013641 is a wasteful number, since it uses less digits than its factorization.

56013641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16842.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 56013641 is about 7484.2261457014. The cubic root of 56013641 is about 382.6172986685.

The spelling of 56013641 in words is "fifty-six million, thirteen thousand, six hundred forty-one".