2553112981 has 2 divisors, whose sum is σ = 2553112982. Its totient is φ = 2553112980.

The previous prime is 2553112967. The next prime is 2553112993. The reversal of 2553112981 is 1892113552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1439823025 + 1113289956 = 37945^2 + 33366^2 .

It is a cyclic number.

It is not a de Polignac number, because 2553112981 - 2⁵ = 2553112949 is a prime.

It is a super-2 number, since 2×2553112981² = 13036771787501412722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2553112981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2553112931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276556490 + 1276556491.

It is an arithmetic number, because the mean of its divisors is an integer number (1276556491).

Almost surely, 2^2553112981 is an apocalyptic number.

It is an amenable number.

2553112981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2553112981 is an equidigital number, since it uses as much as digits as its factorization.

2553112981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 37.

The square root of 2553112981 is about 50528.3383953995. The cubic root of 2553112981 is about 1366.7529226212.

The spelling of 2553112981 in words is "two billion, five hundred fifty-three million, one hundred twelve thousand, nine hundred eighty-one".