252122001 has 16 divisors (see below), whose sum is σ = 355549440. Its totient is φ = 158472720.

The previous prime is 252121993. The next prime is 252122011. The reversal of 252122001 is 100221252.

It is not a de Polignac number, because 252122001 - 2³ = 252121993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (252122011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1546 + ... + 22508.

It is an arithmetic number, because the mean of its divisors is an integer number (22221840).

Almost surely, 2^252122001 is an apocalyptic number.

It is an amenable number.

252122001 is a deficient number, since it is larger than the sum of its proper divisors (103427439).

252122001 is a wasteful number, since it uses less digits than its factorization.

252122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21196.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 252122001 is about 15878.3500717171. The cubic root of 252122001 is about 631.7378748269.

Adding to 252122001 its reverse (100221252), we get a palindrome (352343253).

The spelling of 252122001 in words is "two hundred fifty-two million, one hundred twenty-two thousand, one".