56211345 has 12 divisors (see below), whose sum is σ = 97433076. Its totient is φ = 29979360.

The previous prime is 56211341. The next prime is 56211347. The reversal of 56211345 is 54311265.

56211345 is a `hidden beast` number, since 5 + 621 + 1 + 34 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7225344 + 48986001 = 2688^2 + 6999^2 .

It is not a de Polignac number, because 56211345 - 2² = 56211341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56211341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 624526 + ... + 624615.

It is an arithmetic number, because the mean of its divisors is an integer number (8119423).

Almost surely, 2^56211345 is an apocalyptic number.

It is an amenable number.

56211345 is a deficient number, since it is larger than the sum of its proper divisors (41221731).

56211345 is a wasteful number, since it uses less digits than its factorization.

56211345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249152 (or 1249149 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 56211345 is about 7497.4225571192. The cubic root of 56211345 is about 383.0669281107.

The spelling of 56211345 in words is "fifty-six million, two hundred eleven thousand, three hundred forty-five".