253445422 has 4 divisors (see below), whose sum is σ = 380168136. Its totient is φ = 126722710.

The previous prime is 253445419. The next prime is 253445447. The reversal of 253445422 is 224544352.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 63361354 + ... + 63361357.

It is an arithmetic number, because the mean of its divisors is an integer number (95042034).

Almost surely, 2^253445422 is an apocalyptic number.

253445422 is a deficient number, since it is larger than the sum of its proper divisors (126722714).

253445422 is a wasteful number, since it uses less digits than its factorization.

253445422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126722713.

The product of its digits is 38400, while the sum is 31.

The square root of 253445422 is about 15919.9692838900. The cubic root of 253445422 is about 632.8413043358.

Adding to 253445422 its reverse (224544352), we get a palindrome (477989774).

The spelling of 253445422 in words is "two hundred fifty-three million, four hundred forty-five thousand, four hundred twenty-two".