253811402 has 32 divisors (see below), whose sum is σ = 421730064. Its totient is φ = 113817600.

The previous prime is 253811351. The next prime is 253811429. The reversal of 253811402 is 204118352.

253811402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 38925121 + 214886281 = 6239^2 + 14659^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486902 + ... + 487422.

Almost surely, 2^253811402 is an apocalyptic number.

253811402 is a deficient number, since it is larger than the sum of its proper divisors (167918662).

253811402 is a wasteful number, since it uses less digits than its factorization.

253811402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 253811402 is about 15931.4595062725. The cubic root of 253811402 is about 633.1457694501.

Adding to 253811402 its reverse (204118352), we get a palindrome (457929754).

The spelling of 253811402 in words is "two hundred fifty-three million, eight hundred eleven thousand, four hundred two".