215051155 has 16 divisors (see below), whose sum is σ = 282610944. Its totient is φ = 155795680.

The previous prime is 215051149. The next prime is 215051167. The reversal of 215051155 is 551150512.

It is not a de Polignac number, because 215051155 - 2⁹ = 215050643 is a prime.

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, 7032 + ... + 21898.

It is an arithmetic number, because the mean of its divisors is an integer number (17663184).

Almost surely, 2^215051155 is an apocalyptic number.

215051155 is a deficient number, since it is larger than the sum of its proper divisors (67559789).

215051155 is a wasteful number, since it uses less digits than its factorization.

215051155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15146.

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 215051155 is about 14664.6225658897. The cubic root of 215051155 is about 599.1201502194.

The spelling of 215051155 in words is "two hundred fifteen million, fifty-one thousand, one hundred fifty-five".