215013513 has 16 divisors (see below), whose sum is σ = 336805056. Its totient is φ = 120287040.

The previous prime is 215013497. The next prime is 215013529. The reversal of 215013513 is 315310512.

It is an interprime number because it is at equal distance from previous prime (215013497) and next prime (215013529).

It is not a de Polignac number, because 215013513 - 2⁴ = 215013497 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 215013513.

It is not an unprimeable number, because it can be changed into a prime (215013563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250170 + ... + 251027.

It is an arithmetic number, because the mean of its divisors is an integer number (21050316).

Almost surely, 2^215013513 is an apocalyptic number.

It is an amenable number.

215013513 is a deficient number, since it is larger than the sum of its proper divisors (121791543).

215013513 is a wasteful number, since it uses less digits than its factorization.

215013513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501224.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 215013513 is about 14663.3390808506. The cubic root of 215013513 is about 599.0851920306.

The spelling of 215013513 in words is "two hundred fifteen million, thirteen thousand, five hundred thirteen".