56103513 has 12 divisors (see below), whose sum is σ = 76207920. Its totient is φ = 36703096.

The previous prime is 56103511. The next prime is 56103517. The reversal of 56103513 is 31530165.

It is not a de Polignac number, because 56103513 - 2¹ = 56103511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56103511) 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, 99370 + ... + 99932.

It is an arithmetic number, because the mean of its divisors is an integer number (6350660).

Almost surely, 2^56103513 is an apocalyptic number.

It is an amenable number.

56103513 is a deficient number, since it is larger than the sum of its proper divisors (20104407).

56103513 is an frugal number, since it uses more digits than its factorization.

56103513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 56103513 is about 7490.2278336510. The cubic root of 56103513 is about 382.8218215128.

Adding to 56103513 its reverse (31530165), we get a palindrome (87633678).

It can be divided in two parts, 56103 and 513, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 56103513 in words is "fifty-six million, one hundred three thousand, five hundred thirteen".