215451013 has 16 divisors (see below), whose sum is σ = 241081920. Its totient is φ = 191344896.

The previous prime is 215451007. The next prime is 215451017. The reversal of 215451013 is 310154512.

It is a happy number.

215451013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215451013 - 2⁵ = 215450981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215451017) 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, 90231 + ... + 92587.

It is an arithmetic number, because the mean of its divisors is an integer number (15067620).

Almost surely, 2^215451013 is an apocalyptic number.

It is an amenable number.

215451013 is a deficient number, since it is larger than the sum of its proper divisors (25630907).

215451013 is a wasteful number, since it uses less digits than its factorization.

215451013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 215451013 is about 14678.2496572309. The cubic root of 215451013 is about 599.4912474437.

The spelling of 215451013 in words is "two hundred fifteen million, four hundred fifty-one thousand, thirteen".