253279796450 has 54 divisors (see below), whose sum is σ = 476408063457. Its totient is φ = 100183114800.

The previous prime is 253279796431. The next prime is 253279796459. The reversal of 253279796450 is 54697972352.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 248214200521 + 5065595929 = 498211^2 + 71173^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=355865.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253279796450.

It is not an unprimeable number, because it can be changed into a prime (253279796459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 366540605 + ... + 366541295.

Almost surely, 2^253279796450 is an apocalyptic number.

253279796450 is a deficient number, since it is larger than the sum of its proper divisors (223128267007).

253279796450 is an frugal number, since it uses more digits than its factorization.

253279796450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 28576800, while the sum is 59.

The spelling of 253279796450 in words is "two hundred fifty-three billion, two hundred seventy-nine million, seven hundred ninety-six thousand, four hundred fifty".