252215715 has 8 divisors (see below), whose sum is σ = 403545168. Its totient is φ = 134515040.

The previous prime is 252215707. The next prime is 252215749. The reversal of 252215715 is 517512252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 252215715 - 2³ = 252215707 is a prime.

It is a super-2 number, since 2×252215715² = 127225533785922450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8407176 + ... + 8407205.

It is an arithmetic number, because the mean of its divisors is an integer number (50443146).

Almost surely, 2^252215715 is an apocalyptic number.

252215715 is a deficient number, since it is larger than the sum of its proper divisors (151329453).

252215715 is a wasteful number, since it uses less digits than its factorization.

252215715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16814389.

The product of its digits is 7000, while the sum is 30.

The square root of 252215715 is about 15881.3007968491. The cubic root of 252215715 is about 631.8161376643.

Adding to 252215715 its reverse (517512252), we get a palindrome (769727967).

The spelling of 252215715 in words is "two hundred fifty-two million, two hundred fifteen thousand, seven hundred fifteen".