215042452 has 24 divisors (see below), whose sum is σ = 401345280. Its totient is φ = 100464000.

The previous prime is 215042447. The next prime is 215042519. The reversal of 215042452 is 254240512.

It is a congruent number.

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, 1924 + ... + 20827.

It is an arithmetic number, because the mean of its divisors is an integer number (16722720).

Almost surely, 2^215042452 is an apocalyptic number.

It is an amenable number.

215042452 is a deficient number, since it is larger than the sum of its proper divisors (186302828).

215042452 is a wasteful number, since it uses less digits than its factorization.

215042452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22911 (or 22909 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 215042452 is about 14664.3258283496. The cubic root of 215042452 is about 599.1120680912.

Adding to 215042452 its reverse (254240512), we get a palindrome (469282964).

The spelling of 215042452 in words is "two hundred fifteen million, forty-two thousand, four hundred fifty-two".