253315849 has 4 divisors (see below), whose sum is σ = 261487360. Its totient is φ = 245144340.

The previous prime is 253315837. The next prime is 253315897. The reversal of 253315849 is 948513352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253315849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253315819) 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 3 ways as a sum of consecutive naturals, for example, 4085709 + ... + 4085770.

It is an arithmetic number, because the mean of its divisors is an integer number (65371840).

Almost surely, 2^253315849 is an apocalyptic number.

It is an amenable number.

253315849 is a deficient number, since it is larger than the sum of its proper divisors (8171511).

253315849 is an equidigital number, since it uses as much as digits as its factorization.

253315849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8171510.

The product of its digits is 129600, while the sum is 40.

The square root of 253315849 is about 15915.8992520058. The cubic root of 253315849 is about 632.7334400553.

The spelling of 253315849 in words is "two hundred fifty-three million, three hundred fifteen thousand, eight hundred forty-nine".