56404765 has 4 divisors (see below), whose sum is σ = 67685724. Its totient is φ = 45123808.

The previous prime is 56404753. The next prime is 56404771. The reversal of 56404765 is 56740465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56740465 = 5 ⋅11348093.

It can be written as a sum of positive squares in 2 ways, for example, as 13816089 + 42588676 = 3717^2 + 6526^2 .

It is a cyclic number.

It is not a de Polignac number, because 56404765 - 2¹³ = 56396573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5640472 + ... + 5640481.

It is an arithmetic number, because the mean of its divisors is an integer number (16921431).

Almost surely, 2^56404765 is an apocalyptic number.

It is an amenable number.

56404765 is a deficient number, since it is larger than the sum of its proper divisors (11280959).

56404765 is a wasteful number, since it uses less digits than its factorization.

56404765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11280958.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 56404765 is about 7510.3105794634. The cubic root of 56404765 is about 383.5057955333.

The spelling of 56404765 in words is "fifty-six million, four hundred four thousand, seven hundred sixty-five".