253522342 has 4 divisors (see below), whose sum is σ = 380283516. Its totient is φ = 126761170.

The previous prime is 253522319. The next prime is 253522391. The reversal of 253522342 is 243225352.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 253522342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63380584 + ... + 63380587.

It is an arithmetic number, because the mean of its divisors is an integer number (95070879).

Almost surely, 2^253522342 is an apocalyptic number.

253522342 is a deficient number, since it is larger than the sum of its proper divisors (126761174).

253522342 is a wasteful number, since it uses less digits than its factorization.

253522342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126761173.

The product of its digits is 14400, while the sum is 28.

The square root of 253522342 is about 15922.3849344249. The cubic root of 253522342 is about 632.9053197347.

Adding to 253522342 its reverse (243225352), we get a palindrome (496747694).

The spelling of 253522342 in words is "two hundred fifty-three million, five hundred twenty-two thousand, three hundred forty-two".