253522 has 4 divisors (see below), whose sum is σ = 380286. Its totient is φ = 126760.

The previous prime is 253507. The next prime is 253531. The reversal of 253522 is 225352.

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., 130321 + 123201 = 361^2 + 351^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 253522.

It is an unprimeable number.

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, 63379 + ... + 63382.

2²⁵³⁵²² is an apocalyptic number.

253522 is a deficient number, since it is larger than the sum of its proper divisors (126764).

253522 is a wasteful number, since it uses less digits than its factorization.

253522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126763.

The product of its digits is 600, while the sum is 19.

The square root of 253522 is about 503.5096821313. The cubic root of 253522 is about 63.2905035140.

Adding to 253522 its reverse (225352), we get a palindrome (478874).

The spelling of 253522 in words is "two hundred fifty-three thousand, five hundred twenty-two".