215453252 has 24 divisors (see below), whose sum is σ = 431855424. Its totient is φ = 92133792.

The previous prime is 215453221. The next prime is 215453269. The reversal of 215453252 is 252354512.

215453252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4838 + ... + 21314.

It is an arithmetic number, because the mean of its divisors is an integer number (17993976).

Almost surely, 2^215453252 is an apocalyptic number.

It is an amenable number.

215453252 is an abundant number, since it is smaller than the sum of its proper divisors (216402172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215453252 is a wasteful number, since it uses less digits than its factorization.

215453252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16955 (or 16953 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 215453252 is about 14678.3259263446. The cubic root of 215453252 is about 599.4933241049.

The spelling of 215453252 in words is "two hundred fifteen million, four hundred fifty-three thousand, two hundred fifty-two".