253313145 has 24 divisors (see below), whose sum is σ = 458168256. Its totient is φ = 129225888.

The previous prime is 253313143. The next prime is 253313167. The reversal of 253313145 is 541313352.

It is not a de Polignac number, because 253313145 - 2¹ = 253313143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253313143) 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 23 ways as a sum of consecutive naturals, for example, 121339 + ... + 123408.

It is an arithmetic number, because the mean of its divisors is an integer number (19090344).

Almost surely, 2^253313145 is an apocalyptic number.

It is an amenable number.

253313145 is a deficient number, since it is larger than the sum of its proper divisors (204855111).

253313145 is a wasteful number, since it uses less digits than its factorization.

253313145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244781 (or 244778 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 253313145 is about 15915.8143052751. The cubic root of 253313145 is about 632.7311886930.

Adding to 253313145 its reverse (541313352), we get a palindrome (794626497).

The spelling of 253313145 in words is "two hundred fifty-three million, three hundred thirteen thousand, one hundred forty-five".