2552403281 has 2 divisors, whose sum is σ = 2552403282. Its totient is φ = 2552403280.

The previous prime is 2552403277. The next prime is 2552403313. The reversal of 2552403281 is 1823042552.

It is an a-pointer prime, because the next prime (2552403313) can be obtained adding 2552403281 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2117472256 + 434931025 = 46016^2 + 20855^2 .

It is a cyclic number.

It is not a de Polignac number, because 2552403281 - 2² = 2552403277 is a prime.

It is a super-2 number, since 2×2552403281² = 13029525017719129922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2552403221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276201640 + 1276201641.

It is an arithmetic number, because the mean of its divisors is an integer number (1276201641).

Almost surely, 2^2552403281 is an apocalyptic number.

It is an amenable number.

2552403281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2552403281 is an equidigital number, since it uses as much as digits as its factorization.

2552403281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 2552403281 is about 50521.3151155035. The cubic root of 2552403281 is about 1366.6262701193.

The spelling of 2552403281 in words is "two billion, five hundred fifty-two million, four hundred three thousand, two hundred eighty-one".