56745405 has 24 divisors (see below), whose sum is σ = 104145912. Its totient is φ = 28483584.

The previous prime is 56745397. The next prime is 56745427. The reversal of 56745405 is 50454765.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8678916 + 48066489 = 2946^2 + 6933^2 .

It is not a de Polignac number, because 56745405 - 2³ = 56745397 is a prime.

It is a super-2 number, since 2×56745405² = 6440081977228050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56745405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36324 + ... + 37853.

It is an arithmetic number, because the mean of its divisors is an integer number (4339413).

Almost surely, 2^56745405 is an apocalyptic number.

It is an amenable number.

56745405 is a deficient number, since it is larger than the sum of its proper divisors (47400507).

56745405 is a wasteful number, since it uses less digits than its factorization.

56745405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74205 (or 74202 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 56745405 is about 7532.9545996242. The cubic root of 56745405 is about 384.2762701016.

The spelling of 56745405 in words is "fifty-six million, seven hundred forty-five thousand, four hundred five".