56242645 has 4 divisors (see below), whose sum is σ = 67491180. Its totient is φ = 44994112.

The previous prime is 56242643. The next prime is 56242663. The reversal of 56242645 is 54624265.

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 18861649 + 37380996 = 4343^2 + 6114^2 .

It is a cyclic number.

It is not a de Polignac number, because 56242645 - 2¹ = 56242643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56242645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56242643) 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, 5624260 + ... + 5624269.

It is an arithmetic number, because the mean of its divisors is an integer number (16872795).

Almost surely, 2^56242645 is an apocalyptic number.

It is an amenable number.

56242645 is a deficient number, since it is larger than the sum of its proper divisors (11248535).

56242645 is a wasteful number, since it uses less digits than its factorization.

56242645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11248534.

The product of its digits is 57600, while the sum is 34.

The square root of 56242645 is about 7499.5096506372. The cubic root of 56242645 is about 383.1380155996.

The spelling of 56242645 in words is "fifty-six million, two hundred forty-two thousand, six hundred forty-five".