215272455 has 16 divisors (see below), whose sum is σ = 351765504. Its totient is φ = 112368800.

The previous prime is 215272403. The next prime is 215272459. The reversal of 215272455 is 554272512.

It is not a de Polignac number, because 215272455 - 2⁸ = 215272199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215272459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151971 + ... + 153380.

It is an arithmetic number, because the mean of its divisors is an integer number (21985344).

Almost surely, 2^215272455 is an apocalyptic number.

215272455 is a deficient number, since it is larger than the sum of its proper divisors (136493049).

215272455 is a wasteful number, since it uses less digits than its factorization.

215272455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305406.

The product of its digits is 28000, while the sum is 33.

The square root of 215272455 is about 14672.1659955168. The cubic root of 215272455 is about 599.3255894569.

The spelling of 215272455 in words is "two hundred fifteen million, two hundred seventy-two thousand, four hundred fifty-five".