252523430 has 16 divisors (see below), whose sum is σ = 454965120. Its totient is φ = 100915392.

The previous prime is 252523399. The next prime is 252523501. The reversal of 252523430 is 34325252.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 252523430.

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, 107 + ... + 22473.

It is an arithmetic number, because the mean of its divisors is an integer number (28435320).

Almost surely, 2^252523430 is an apocalyptic number.

252523430 is a deficient number, since it is larger than the sum of its proper divisors (202441690).

252523430 is a wasteful number, since it uses less digits than its factorization.

252523430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23503.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 252523430 is about 15890.9858095714. The cubic root of 252523430 is about 632.0729816777.

Adding to 252523430 its reverse (34325252), we get a palindrome (286848682).

It can be divided in two parts, 25252 and 3430, that added together give a palindrome (28682).

The spelling of 252523430 in words is "two hundred fifty-two million, five hundred twenty-three thousand, four hundred thirty".