252612561 has 8 divisors (see below), whose sum is σ = 336891520. Its totient is φ = 168370992.

The previous prime is 252612553. The next prime is 252612617. The reversal of 252612561 is 165216252.

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

It is not a de Polignac number, because 252612561 - 2³ = 252612553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252612511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17160 + ... + 28278.

It is an arithmetic number, because the mean of its divisors is an integer number (42111440).

Almost surely, 2^252612561 is an apocalyptic number.

It is an amenable number.

252612561 is a deficient number, since it is larger than the sum of its proper divisors (84278959).

252612561 is a wasteful number, since it uses less digits than its factorization.

252612561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18695.

The product of its digits is 7200, while the sum is 30.

The square root of 252612561 is about 15893.7900137129. The cubic root of 252612561 is about 632.1473386987.

The spelling of 252612561 in words is "two hundred fifty-two million, six hundred twelve thousand, five hundred sixty-one".