252406045 has 32 divisors (see below), whose sum is σ = 322672896. Its totient is φ = 189273600.

The previous prime is 252406043. The next prime is 252406057. The reversal of 252406045 is 540604252.

It is not a de Polignac number, because 252406045 - 2¹ = 252406043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252406043) 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, 811440 + ... + 811750.

It is an arithmetic number, because the mean of its divisors is an integer number (10083528).

Almost surely, 2^252406045 is an apocalyptic number.

It is an amenable number.

252406045 is a deficient number, since it is larger than the sum of its proper divisors (70266851).

252406045 is a wasteful number, since it uses less digits than its factorization.

252406045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 252406045 is about 15887.2919341214. The cubic root of 252406045 is about 631.9750272205.

The spelling of 252406045 in words is "two hundred fifty-two million, four hundred six thousand, forty-five".