252256538 has 4 divisors (see below), whose sum is σ = 378384810. Its totient is φ = 126128268.

The previous prime is 252256531. The next prime is 252256549. The reversal of 252256538 is 835652252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 140256649 + 111999889 = 11843^2 + 10583^2 .

It is not an unprimeable number, because it can be changed into a prime (252256531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63064133 + ... + 63064136.

Almost surely, 2^252256538 is an apocalyptic number.

252256538 is a deficient number, since it is larger than the sum of its proper divisors (126128272).

252256538 is a wasteful number, since it uses less digits than its factorization.

252256538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126128271.

The product of its digits is 144000, while the sum is 38.

The square root of 252256538 is about 15882.5859985079. The cubic root of 252256538 is about 631.8502238812.

The spelling of 252256538 in words is "two hundred fifty-two million, two hundred fifty-six thousand, five hundred thirty-eight".