56430993 has 4 divisors (see below), whose sum is σ = 75241328. Its totient is φ = 37620660.

The previous prime is 56430991. The next prime is 56431009. The reversal of 56430993 is 39903465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56430993 - 2¹ = 56430991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56430991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9405163 + ... + 9405168.

It is an arithmetic number, because the mean of its divisors is an integer number (18810332).

Almost surely, 2^56430993 is an apocalyptic number.

It is an amenable number.

56430993 is a deficient number, since it is larger than the sum of its proper divisors (18810335).

56430993 is a wasteful number, since it uses less digits than its factorization.

56430993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18810334.

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 56430993 is about 7512.0565093721. The cubic root of 56430993 is about 383.5652292315.

The spelling of 56430993 in words is "fifty-six million, four hundred thirty thousand, nine hundred ninety-three".