215116539 has 32 divisors (see below), whose sum is σ = 329011200. Its totient is φ = 123747360.

The previous prime is 215116513. The next prime is 215116549. The reversal of 215116539 is 935611512.

It is not a de Polignac number, because 215116539 - 2⁷ = 215116411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (215116549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104482 + ... + 106520.

It is an arithmetic number, because the mean of its divisors is an integer number (10281600).

Almost surely, 2^215116539 is an apocalyptic number.

215116539 is a deficient number, since it is larger than the sum of its proper divisors (113894661).

215116539 is a wasteful number, since it uses less digits than its factorization.

215116539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215.

The product of its digits is 8100, while the sum is 33.

The square root of 215116539 is about 14666.8517071661. The cubic root of 215116539 is about 599.1808627548.

The spelling of 215116539 in words is "two hundred fifteen million, one hundred sixteen thousand, five hundred thirty-nine".