253644106 has 4 divisors (see below), whose sum is σ = 380466162. Its totient is φ = 126822052.

The previous prime is 253644089. The next prime is 253644113. The reversal of 253644106 is 601446352.

253644106 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 232105225 + 21538881 = 15235^2 + 4641^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63411025 + ... + 63411028.

Almost surely, 2^253644106 is an apocalyptic number.

253644106 is a deficient number, since it is larger than the sum of its proper divisors (126822056).

253644106 is a wasteful number, since it uses less digits than its factorization.

253644106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126822055.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 253644106 is about 15926.2081488344. The cubic root of 253644106 is about 633.0066293447.

The spelling of 253644106 in words is "two hundred fifty-three million, six hundred forty-four thousand, one hundred six".