56213493 has 16 divisors (see below), whose sum is σ = 86693376. Its totient is φ = 31734000.

The previous prime is 56213473. The next prime is 56213497. The reversal of 56213493 is 39431265.

It is not a de Polignac number, because 56213493 - 2¹² = 56209397 is a prime.

It is a super-2 number, since 2×56213493² = 6319913590522098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56213497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14383 + ... + 17868.

It is an arithmetic number, because the mean of its divisors is an integer number (5418336).

Almost surely, 2^56213493 is an apocalyptic number.

It is an amenable number.

56213493 is a deficient number, since it is larger than the sum of its proper divisors (30479883).

56213493 is a wasteful number, since it uses less digits than its factorization.

56213493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32344.

The product of its digits is 19440, while the sum is 33.

The square root of 56213493 is about 7497.5658049796. The cubic root of 56213493 is about 383.0718074180.

The spelling of 56213493 in words is "fifty-six million, two hundred thirteen thousand, four hundred ninety-three".