2521286401 has 2 divisors, whose sum is σ = 2521286402. Its totient is φ = 2521286400.

The previous prime is 2521286399. The next prime is 2521286407. The reversal of 2521286401 is 1046821252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2374028176 + 147258225 = 48724^2 + 12135^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521286401 - 2¹ = 2521286399 is a prime.

Together with 2521286399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2521286407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260643200 + 1260643201.

It is an arithmetic number, because the mean of its divisors is an integer number (1260643201).

Almost surely, 2^2521286401 is an apocalyptic number.

It is an amenable number.

2521286401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521286401 is an equidigital number, since it uses as much as digits as its factorization.

2521286401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 2521286401 is about 50212.4128179477. The cubic root of 2521286401 is about 1361.0499391155.

The spelling of 2521286401 in words is "two billion, five hundred twenty-one million, two hundred eighty-six thousand, four hundred one".