56735540 has 12 divisors (see below), whose sum is σ = 119144676. Its totient is φ = 22694208.

The previous prime is 56735537. The next prime is 56735621. The reversal of 56735540 is 4553765.

It can be written as a sum of positive squares in 2 ways, for example, as 22676644 + 34058896 = 4762^2 + 5836^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56735540.

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, 1418369 + ... + 1418408.

It is an arithmetic number, because the mean of its divisors is an integer number (9928723).

Almost surely, 2^56735540 is an apocalyptic number.

It is an amenable number.

56735540 is an abundant number, since it is smaller than the sum of its proper divisors (62409136).

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

56735540 is a wasteful number, since it uses less digits than its factorization.

56735540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836786 (or 2836784 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 56735540 is about 7532.2997816072. The cubic root of 56735540 is about 384.2540004271.

It can be divided in two parts, 56735 and 540, that added together give a palindrome (57275).

The spelling of 56735540 in words is "fifty-six million, seven hundred thirty-five thousand, five hundred forty".