215241885 has 24 divisors (see below), whose sum is σ = 373486464. Its totient is φ = 114672480.

The previous prime is 215241877. The next prime is 215241907. The reversal of 215241885 is 588142512.

215241885 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 215241885 - 2³ = 215241877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53080 + ... + 56990.

It is an arithmetic number, because the mean of its divisors is an integer number (15561936).

Almost surely, 2^215241885 is an apocalyptic number.

It is an amenable number.

215241885 is a deficient number, since it is larger than the sum of its proper divisors (158244579).

215241885 is a wasteful number, since it uses less digits than its factorization.

215241885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5145 (or 5142 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 215241885 is about 14671.1241900544. The cubic root of 215241885 is about 599.2972188191.

It can be divided in two parts, 21524 and 1885, that added together give a square (23409 = 153²).

The spelling of 215241885 in words is "two hundred fifteen million, two hundred forty-one thousand, eight hundred eighty-five".