56505345 has 16 divisors (see below), whose sum is σ = 97363392. Its totient is φ = 27817920.

The previous prime is 56505329. The next prime is 56505347. The reversal of 56505345 is 54350565.

It is not a de Polignac number, because 56505345 - 2⁴ = 56505329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56505347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144691 + ... + 145080.

It is an arithmetic number, because the mean of its divisors is an integer number (6085212).

Almost surely, 2^56505345 is an apocalyptic number.

It is an amenable number.

56505345 is a deficient number, since it is larger than the sum of its proper divisors (40858047).

56505345 is a wasteful number, since it uses less digits than its factorization.

56505345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289792.

The product of its (nonzero) digits is 45000, while the sum is 33.

The square root of 56505345 is about 7517.0037248893. The cubic root of 56505345 is about 383.7336138037.

The spelling of 56505345 in words is "fifty-six million, five hundred five thousand, three hundred forty-five".