252306615 has 32 divisors (see below), whose sum is σ = 446443776. Its totient is φ = 120648960.

The previous prime is 252306611. The next prime is 252306631. The reversal of 252306615 is 516603252.

It is not a de Polignac number, because 252306615 - 2² = 252306611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252306611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1572 + ... + 22518.

It is an arithmetic number, because the mean of its divisors is an integer number (13951368).

Almost surely, 2^252306615 is an apocalyptic number.

252306615 is a deficient number, since it is larger than the sum of its proper divisors (194137161).

252306615 is a wasteful number, since it uses less digits than its factorization.

252306615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21039.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 252306615 is about 15884.1623952917. The cubic root of 252306615 is about 631.8920319422.

Adding to 252306615 its reverse (516603252), we get a palindrome (768909867).

The spelling of 252306615 in words is "two hundred fifty-two million, three hundred six thousand, six hundred fifteen".