253391403 has 8 divisors (see below), whose sum is σ = 342614016. Its totient is φ = 166548200.

The previous prime is 253391399. The next prime is 253391407. The reversal of 253391403 is 304193352.

It is an interprime number because it is at equal distance from previous prime (253391399) and next prime (253391407).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253391403 - 2² = 253391399 is a prime.

It is a super-2 number, since 2×253391403² = 128414406228616818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253391407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594603 + ... + 595028.

It is an arithmetic number, because the mean of its divisors is an integer number (42826752).

Almost surely, 2^253391403 is an apocalyptic number.

253391403 is a deficient number, since it is larger than the sum of its proper divisors (89222613).

253391403 is a wasteful number, since it uses less digits than its factorization.

253391403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189705.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 253391403 is about 15918.2726135721. The cubic root of 253391403 is about 632.7963401732.

The spelling of 253391403 in words is "two hundred fifty-three million, three hundred ninety-one thousand, four hundred three".