215445153 has 16 divisors (see below), whose sum is σ = 358142976. Its totient is φ = 111919440.

The previous prime is 215445127. The next prime is 215445157. The reversal of 215445153 is 351544512.

It is not a de Polignac number, because 215445153 - 2⁹ = 215444641 is a prime.

It is a super-2 number, since 2×215445153² = 92833227902386818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215445153.

It is not an unprimeable number, because it can be changed into a prime (215445157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466101 + ... + 466562.

It is an arithmetic number, because the mean of its divisors is an integer number (22383936).

Almost surely, 2^215445153 is an apocalyptic number.

It is an amenable number.

215445153 is a deficient number, since it is larger than the sum of its proper divisors (142697823).

215445153 is a wasteful number, since it uses less digits than its factorization.

215445153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932684.

The product of its digits is 12000, while the sum is 30.

The square root of 215445153 is about 14678.0500407922. The cubic root of 215445153 is about 599.4858122553.

Adding to 215445153 its reverse (351544512), we get a palindrome (566989665).

The spelling of 215445153 in words is "two hundred fifteen million, four hundred forty-five thousand, one hundred fifty-three".