215981153 has 8 divisors (see below), whose sum is σ = 222996480. Its totient is φ = 209049120.

The previous prime is 215981149. The next prime is 215981159. The reversal of 215981153 is 351189512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215981153 - 2² = 215981149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215981159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15533 + ... + 25946.

It is an arithmetic number, because the mean of its divisors is an integer number (27874560).

Almost surely, 2^215981153 is an apocalyptic number.

It is an amenable number.

215981153 is a deficient number, since it is larger than the sum of its proper divisors (7015327).

215981153 is a wasteful number, since it uses less digits than its factorization.

215981153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41647.

The product of its digits is 10800, while the sum is 35.

The square root of 215981153 is about 14696.2972547509. The cubic root of 215981153 is about 599.9825485665.

The spelling of 215981153 in words is "two hundred fifteen million, nine hundred eighty-one thousand, one hundred fifty-three".