56361565 has 32 divisors (see below), whose sum is σ = 76317696. Its totient is φ = 39674880.

The previous prime is 56361553. The next prime is 56361577. The reversal of 56361565 is 56516365.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56361553) and next prime (56361577).

It is not a de Polignac number, because 56361565 - 2⁵ = 56361533 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167077 + ... + 167413.

It is an arithmetic number, because the mean of its divisors is an integer number (2384928).

Almost surely, 2^56361565 is an apocalyptic number.

It is an amenable number.

56361565 is a deficient number, since it is larger than the sum of its proper divisors (19956131).

56361565 is a wasteful number, since it uses less digits than its factorization.

56361565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469.

The product of its digits is 81000, while the sum is 37.

The square root of 56361565 is about 7507.4339823937. The cubic root of 56361565 is about 383.4078624255.

It can be divided in two parts, 563 and 61565, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 56361565 in words is "fifty-six million, three hundred sixty-one thousand, five hundred sixty-five".