253300403 has 4 divisors (see below), whose sum is σ = 264313488. Its totient is φ = 242287320.

The previous prime is 253300387. The next prime is 253300427. The reversal of 253300403 is 304003352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253300403 - 2⁴ = 253300387 is a prime.

It is a super-2 number, since 2×253300403² = 128322188319924818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253300603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5506508 + ... + 5506553.

It is an arithmetic number, because the mean of its divisors is an integer number (66078372).

Almost surely, 2^253300403 is an apocalyptic number.

253300403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

253300403 is a deficient number, since it is larger than the sum of its proper divisors (11013085).

253300403 is a wasteful number, since it uses less digits than its factorization.

253300403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11013084.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 253300403 is about 15915.4140065535. The cubic root of 253300403 is about 632.7205794317.

Adding to 253300403 its reverse (304003352), we get a palindrome (557303755).

The spelling of 253300403 in words is "two hundred fifty-three million, three hundred thousand, four hundred three".