56213045 has 18 divisors (see below), whose sum is σ = 78632982. Its totient is φ = 38465616.

The previous prime is 56213021. The next prime is 56213051. The reversal of 56213045 is 54031265.

It can be written as a sum of positive squares in only one way, i.e., 44970436 + 11242609 = 6706^2 + 3353^2 .

It is not a de Polignac number, because 56213045 - 2⁸ = 56212789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 117116 + ... + 117594.

It is an arithmetic number, because the mean of its divisors is an integer number (4368499).

Almost surely, 2^56213045 is an apocalyptic number.

It is an amenable number.

56213045 is a deficient number, since it is larger than the sum of its proper divisors (22419937).

56213045 is an frugal number, since it uses more digits than its factorization.

56213045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 56213045 is about 7497.5359285568. The cubic root of 56213045 is about 383.0707897702.

The spelling of 56213045 in words is "fifty-six million, two hundred thirteen thousand, forty-five".