56103993 has 12 divisors (see below), whose sum is σ = 88406448. Its totient is φ = 34002360.

The previous prime is 56103977. The next prime is 56104003. The reversal of 56103993 is 39930165.

56103993 is a `hidden beast` number, since 5 + 610 + 39 + 9 + 3 = 666.

It is not a de Polignac number, because 56103993 - 2⁴ = 56103977 is a prime.

It is a super-3 number, since 3×56103993³ (a number of 24 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (56103913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283255 + ... + 283452.

It is an arithmetic number, because the mean of its divisors is an integer number (7367204).

Almost surely, 2^56103993 is an apocalyptic number.

It is an amenable number.

56103993 is a deficient number, since it is larger than the sum of its proper divisors (32302455).

56103993 is a wasteful number, since it uses less digits than its factorization.

56103993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566724 (or 566721 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 56103993 is about 7490.2598753314. The cubic root of 56103993 is about 382.8229132683.

Subtracting from 56103993 its reverse (39930165), we obtain a triangular number (16173828 = T₅₆₈₇).

The spelling of 56103993 in words is "fifty-six million, one hundred three thousand, nine hundred ninety-three".