252213493 has 16 divisors (see below), whose sum is σ = 298719360. Its totient is φ = 208353600.

The previous prime is 252213487. The next prime is 252213503. The reversal of 252213493 is 394312252.

It is a de Polignac number, because none of the positive numbers 2^k-252213493 is a prime.

It is a super-2 number, since 2×252213493² = 127223292102522098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252213433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214798 + ... + 215968.

It is an arithmetic number, because the mean of its divisors is an integer number (18669960).

Almost surely, 2^252213493 is an apocalyptic number.

It is an amenable number.

252213493 is a deficient number, since it is larger than the sum of its proper divisors (46505867).

252213493 is a wasteful number, since it uses less digits than its factorization.

252213493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268.

The product of its digits is 12960, while the sum is 31.

The square root of 252213493 is about 15881.2308402088. The cubic root of 252213493 is about 631.8142822425.

The spelling of 252213493 in words is "two hundred fifty-two million, two hundred thirteen thousand, four hundred ninety-three".