215452450 has 12 divisors (see below), whose sum is σ = 400741650. Its totient is φ = 86180960.

The previous prime is 215452439. The next prime is 215452453. The reversal of 215452450 is 54254512.

215452450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 156975841 + 58476609 = 12529^2 + 7647^2 .

It is a super-2 number, since 2×215452450² = 92839516422005000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215452453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2154475 + ... + 2154574.

Almost surely, 2^215452450 is an apocalyptic number.

215452450 is a deficient number, since it is larger than the sum of its proper divisors (185289200).

215452450 is a wasteful number, since it uses less digits than its factorization.

215452450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309061 (or 4309056 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 215452450 is about 14678.2986071275. The cubic root of 215452450 is about 599.4925802556.

The spelling of 215452450 in words is "two hundred fifteen million, four hundred fifty-two thousand, four hundred fifty".