56311493 has 8 divisors (see below), whose sum is σ = 65570688. Its totient is φ = 47355984.

The previous prime is 56311477. The next prime is 56311501. The reversal of 56311493 is 39411365.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56311493 - 2⁴ = 56311477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56311793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75521 + ... + 76262.

It is an arithmetic number, because the mean of its divisors is an integer number (8196336).

Almost surely, 2^56311493 is an apocalyptic number.

56311493 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

56311493 is a deficient number, since it is larger than the sum of its proper divisors (9259195).

56311493 is a wasteful number, since it uses less digits than its factorization.

56311493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151843.

The product of its digits is 9720, while the sum is 32.

The square root of 56311493 is about 7504.0984135338. The cubic root of 56311493 is about 383.2942880626.

The spelling of 56311493 in words is "fifty-six million, three hundred eleven thousand, four hundred ninety-three".