252161655 has 8 divisors (see below), whose sum is σ = 403458672. Its totient is φ = 134486208.

The previous prime is 252161639. The next prime is 252161681. The reversal of 252161655 is 556161252.

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

It is not a de Polignac number, because 252161655 - 2⁴ = 252161639 is a prime.

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, 8405374 + ... + 8405403.

It is an arithmetic number, because the mean of its divisors is an integer number (50432334).

Almost surely, 2^252161655 is an apocalyptic number.

252161655 is a deficient number, since it is larger than the sum of its proper divisors (151297017).

252161655 is a wasteful number, since it uses less digits than its factorization.

252161655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16810785.

The product of its digits is 18000, while the sum is 33.

The square root of 252161655 is about 15879.5987039975. The cubic root of 252161655 is about 631.7709932119.

The spelling of 252161655 in words is "two hundred fifty-two million, one hundred sixty-one thousand, six hundred fifty-five".