13000057 has 4 divisors (see below), whose sum is σ = 14857216. Its totient is φ = 11142900.

The previous prime is 13000049. The next prime is 13000069. The reversal of 13000057 is 75000031.

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 a cyclic number.

It is not a de Polignac number, because 13000057 - 2³ = 13000049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13000057.

It is not an unprimeable number, because it can be changed into a prime (13000027) 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, 928569 + ... + 928582.

It is an arithmetic number, because the mean of its divisors is an integer number (3714304).

Almost surely, 2^13000057 is an apocalyptic number.

It is an amenable number.

13000057 is a deficient number, since it is larger than the sum of its proper divisors (1857159).

13000057 is an equidigital number, since it uses as much as digits as its factorization.

13000057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857158.

The product of its (nonzero) digits is 105, while the sum is 16.

The square root of 13000057 is about 3605.5591799331. The cubic root of 13000057 is about 235.1338124282.

Adding to 13000057 its reverse (75000031), we get a palindrome (88000088).

The spelling of 13000057 in words is "thirteen million, fifty-seven", and thus it is an aban number and an uban number.