253344403 has 8 divisors (see below), whose sum is σ = 273468608. Its totient is φ = 233311104.

The previous prime is 253344397. The next prime is 253344409. The reversal of 253344403 is 304443352.

It is an interprime number because it is at equal distance from previous prime (253344397) and next prime (253344409).

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

It is not a de Polignac number, because 253344403 - 2¹³ = 253336211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253344409) 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, 16875 + ... + 28132.

It is an arithmetic number, because the mean of its divisors is an integer number (34183576).

Almost surely, 2^253344403 is an apocalyptic number.

253344403 is a deficient number, since it is larger than the sum of its proper divisors (20124205).

253344403 is a wasteful number, since it uses less digits than its factorization.

253344403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45453.

The product of its (nonzero) digits is 17280, while the sum is 28.

The square root of 253344403 is about 15916.7962542718. The cubic root of 253344403 is about 632.7572132643.

Adding to 253344403 its reverse (304443352), we get a palindrome (557787755).

The spelling of 253344403 in words is "two hundred fifty-three million, three hundred forty-four thousand, four hundred three".