215886255 has 16 divisors (see below), whose sum is σ = 371988960. Its totient is φ = 106282368.

The previous prime is 215886241. The next prime is 215886283. The reversal of 215886255 is 552688512.

It is not a de Polignac number, because 215886255 - 2⁴ = 215886239 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 553360 + ... + 553749.

It is an arithmetic number, because the mean of its divisors is an integer number (23249310).

Almost surely, 2^215886255 is an apocalyptic number.

215886255 is a deficient number, since it is larger than the sum of its proper divisors (156102705).

215886255 is a wasteful number, since it uses less digits than its factorization.

215886255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107130.

The product of its digits is 192000, while the sum is 42.

The square root of 215886255 is about 14693.0682636405. The cubic root of 215886255 is about 599.8946620632.

The spelling of 215886255 in words is "two hundred fifteen million, eight hundred eighty-six thousand, two hundred fifty-five".