56742516 has 36 divisors (see below), whose sum is σ = 144014052. Its totient is φ = 18837504.

The previous prime is 56742479. The next prime is 56742533. The reversal of 56742516 is 61524765.

It is a happy number.

56742516 is a `hidden beast` number, since 567 + 42 + 51 + 6 = 666.

56742516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 55442916 + 1299600 = 7446^2 + 1140^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6186 + ... + 12318.

Almost surely, 2^56742516 is an apocalyptic number.

It is an amenable number.

56742516 is an abundant number, since it is smaller than the sum of its proper divisors (87271536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56742516 is a wasteful number, since it uses less digits than its factorization.

56742516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400 (or 6395 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 56742516 is about 7532.7628397554. The cubic root of 56742516 is about 384.2697486163.

The spelling of 56742516 in words is "fifty-six million, seven hundred forty-two thousand, five hundred sixteen".