215241015 has 64 divisors (see below), whose sum is σ = 401448960. Its totient is φ = 97426560.

The previous prime is 215241007. The next prime is 215241031. The reversal of 215241015 is 510142512.

215241015 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 215241015 - 2³ = 215241007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215240982 and 215241000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162526 + ... + 163844.

It is an arithmetic number, because the mean of its divisors is an integer number (6272640).

Almost surely, 2^215241015 is an apocalyptic number.

215241015 is a deficient number, since it is larger than the sum of its proper divisors (186207945).

215241015 is a wasteful number, since it uses less digits than its factorization.

215241015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 215241015 is about 14671.0945399449. The cubic root of 215241015 is about 599.2964113720.

Adding to 215241015 its reverse (510142512), we get a palindrome (725383527).

The spelling of 215241015 in words is "two hundred fifteen million, two hundred forty-one thousand, fifteen".