253043145 has 24 divisors (see below), whose sum is σ = 439078536. Its totient is φ = 134811648.

The previous prime is 253043143. The next prime is 253043149. The reversal of 253043145 is 541340352.

It can be written as a sum of positive squares in 4 ways, for example, as 31539456 + 221503689 = 5616^2 + 14883^2 .

It is not a de Polignac number, because 253043145 - 2¹ = 253043143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253043143) 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, 49447 + ... + 54323.

It is an arithmetic number, because the mean of its divisors is an integer number (18294939).

Almost surely, 2^253043145 is an apocalyptic number.

It is an amenable number.

253043145 is a deficient number, since it is larger than the sum of its proper divisors (186035391).

253043145 is a wasteful number, since it uses less digits than its factorization.

253043145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6041 (or 6038 counting only the distinct ones).

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

The square root of 253043145 is about 15907.3299142251. The cubic root of 253043145 is about 632.5063047797.

Adding to 253043145 its reverse (541340352), we get a palindrome (794383497).

The spelling of 253043145 in words is "two hundred fifty-three million, forty-three thousand, one hundred forty-five".