252418538 has 4 divisors (see below), whose sum is σ = 378627810. Its totient is φ = 126209268.

The previous prime is 252418531. The next prime is 252418619. The reversal of 252418538 is 835814252.

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., 245642929 + 6775609 = 15673^2 + 2603^2 .

It is not an unprimeable number, because it can be changed into a prime (252418531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63104633 + ... + 63104636.

Almost surely, 2^252418538 is an apocalyptic number.

252418538 is a deficient number, since it is larger than the sum of its proper divisors (126209272).

252418538 is a wasteful number, since it uses less digits than its factorization.

252418538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126209271.

The product of its digits is 76800, while the sum is 38.

The square root of 252418538 is about 15887.6851051372. The cubic root of 252418538 is about 631.9854537190.

The spelling of 252418538 in words is "two hundred fifty-two million, four hundred eighteen thousand, five hundred thirty-eight".