253304145 has 16 divisors (see below), whose sum is σ = 450318720. Its totient is φ = 135095472.

The previous prime is 253304137. The next prime is 253304171. The reversal of 253304145 is 541403352.

253304145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253304145 - 2³ = 253304137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938029 + ... + 938298.

It is an arithmetic number, because the mean of its divisors is an integer number (28144920).

Almost surely, 2^253304145 is an apocalyptic number.

It is an amenable number.

253304145 is a deficient number, since it is larger than the sum of its proper divisors (197014575).

253304145 is a wasteful number, since it uses less digits than its factorization.

253304145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876341 (or 1876335 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 253304145 is about 15915.5315651096. The cubic root of 253304145 is about 632.7236951377.

Adding to 253304145 its reverse (541403352), we get a palindrome (794707497).

The spelling of 253304145 in words is "two hundred fifty-three million, three hundred four thousand, one hundred forty-five".