253897998 has 16 divisors (see below), whose sum is σ = 524176896. Its totient is φ = 81902520.

The previous prime is 253897997. The next prime is 253898011. The reversal of 253897998 is 899798352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253897993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682336 + ... + 682707.

It is an arithmetic number, because the mean of its divisors is an integer number (32761056).

Almost surely, 2^253897998 is an apocalyptic number.

253897998 is an abundant number, since it is smaller than the sum of its proper divisors (270278898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253897998 is a wasteful number, since it uses less digits than its factorization.

253897998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365079.

The product of its digits is 9797760, while the sum is 60.

The square root of 253897998 is about 15934.1770418180. The cubic root of 253897998 is about 633.2177673409.

The spelling of 253897998 in words is "two hundred fifty-three million, eight hundred ninety-seven thousand, nine hundred ninety-eight".