56503313 has 8 divisors (see below), whose sum is σ = 57273216. Its totient is φ = 55738800.

The previous prime is 56503309. The next prime is 56503327. The reversal of 56503313 is 31330565.

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 56503313 - 2² = 56503309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56503303) 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, 22520 + ... + 24902.

It is an arithmetic number, because the mean of its divisors is an integer number (7159152).

Almost surely, 2^56503313 is an apocalyptic number.

It is an amenable number.

56503313 is a deficient number, since it is larger than the sum of its proper divisors (769903).

56503313 is a wasteful number, since it uses less digits than its factorization.

56503313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695.

The product of its (nonzero) digits is 4050, while the sum is 26.

The square root of 56503313 is about 7516.8685634378. The cubic root of 56503313 is about 383.7290139082.

Adding to 56503313 its reverse (31330565), we get a palindrome (87833878).

The spelling of 56503313 in words is "fifty-six million, five hundred three thousand, three hundred thirteen".