252606021771 has 8 divisors (see below), whose sum is σ = 336889419840. Its totient is φ = 168363319112.

The previous prime is 252606021739. The next prime is 252606021779. The reversal of 252606021771 is 177120606252.

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

It is a cyclic number.

It is not a de Polignac number, because 252606021771 - 2⁵ = 252606021739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252606021779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10159365 + ... + 10184198.

It is an arithmetic number, because the mean of its divisors is an integer number (42111177480).

Almost surely, 2^252606021771 is an apocalyptic number.

252606021771 is a deficient number, since it is larger than the sum of its proper divisors (84283398069).

252606021771 is a wasteful number, since it uses less digits than its factorization.

252606021771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20347705.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 252606021771 in words is "two hundred fifty-two billion, six hundred six million, twenty-one thousand, seven hundred seventy-one".