13057215 has 16 divisors (see below), whose sum is σ = 21800448. Its totient is φ = 6660896.

The previous prime is 13057201. The next prime is 13057223. The reversal of 13057215 is 51275031.

It is a cyclic number.

It is not a de Polignac number, because 13057215 - 2⁵ = 13057183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18579 + ... + 19268.

It is an arithmetic number, because the mean of its divisors is an integer number (1362528).

Almost surely, 2^13057215 is an apocalyptic number.

13057215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13057215 is a deficient number, since it is larger than the sum of its proper divisors (8743233).

13057215 is a wasteful number, since it uses less digits than its factorization.

13057215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37878.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 13057215 is about 3613.4768575432. The cubic root of 13057215 is about 235.4779167991.

The spelling of 13057215 in words is "thirteen million, fifty-seven thousand, two hundred fifteen".