253659898 has 12 divisors (see below), whose sum is σ = 382137210. Its totient is φ = 126282360.

The previous prime is 253659853. The next prime is 253659943. The reversal of 253659898 is 898956352.

It is an interprime number because it is at equal distance from previous prime (253659853) and next prime (253659943).

It can be written as a sum of positive squares in only one way, i.e., 237683889 + 15976009 = 15417^2 + 3997^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 443953 + ... + 444523.

Almost surely, 2^253659898 is an apocalyptic number.

253659898 is a deficient number, since it is larger than the sum of its proper divisors (128477312).

253659898 is an frugal number, since it uses more digits than its factorization.

253659898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533 (or 962 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 55.

The square root of 253659898 is about 15926.7039276807. The cubic root of 253659898 is about 633.0197661678.

The spelling of 253659898 in words is "two hundred fifty-three million, six hundred fifty-nine thousand, eight hundred ninety-eight".