56213445 has 16 divisors (see below), whose sum is σ = 90034560. Its totient is φ = 29949504.

The previous prime is 56213411. The next prime is 56213467. The reversal of 56213445 is 54431265.

It is not a de Polignac number, because 56213445 - 2¹⁷ = 56082373 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 26691 + ... + 28719.

It is an arithmetic number, because the mean of its divisors is an integer number (5627160).

Almost surely, 2^56213445 is an apocalyptic number.

It is an amenable number.

56213445 is a deficient number, since it is larger than the sum of its proper divisors (33821115).

56213445 is a wasteful number, since it uses less digits than its factorization.

56213445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884.

The product of its digits is 14400, while the sum is 30.

The square root of 56213445 is about 7497.5626039400. The cubic root of 56213445 is about 383.0716983846.

The spelling of 56213445 in words is "fifty-six million, two hundred thirteen thousand, four hundred forty-five".