253918485 has 12 divisors (see below), whose sum is σ = 440125452. Its totient is φ = 135423168.

The previous prime is 253918463. The next prime is 253918493. The reversal of 253918485 is 584819352.

It can be written as a sum of positive squares in 2 ways, for example, as 33663204 + 220255281 = 5802^2 + 14841^2 .

It is not a de Polignac number, because 253918485 - 2⁹ = 253917973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 5642633 = 253918485 / (2 + 5 + 3 + 9 + 1 + 8 + 4 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 253918485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2821272 + ... + 2821361.

It is an arithmetic number, because the mean of its divisors is an integer number (36677121).

Almost surely, 2^253918485 is an apocalyptic number.

It is an amenable number.

253918485 is a deficient number, since it is larger than the sum of its proper divisors (186206967).

253918485 is a wasteful number, since it uses less digits than its factorization.

253918485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5642644 (or 5642641 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 253918485 is about 15934.8198922988. The cubic root of 253918485 is about 633.2347983055.

The spelling of 253918485 in words is "two hundred fifty-three million, nine hundred eighteen thousand, four hundred eighty-five".