2521427897 has 2 divisors, whose sum is σ = 2521427898. Its totient is φ = 2521427896.

The previous prime is 2521427809. The next prime is 2521427959. The reversal of 2521427897 is 7987241252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2286848041 + 234579856 = 47821^2 + 15316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2521427897 is a prime.

It is not a weakly prime, because it can be changed into another prime (2521423897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260713948 + 1260713949.

It is an arithmetic number, because the mean of its divisors is an integer number (1260713949).

Almost surely, 2^2521427897 is an apocalyptic number.

It is an amenable number.

2521427897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521427897 is an equidigital number, since it uses as much as digits as its factorization.

2521427897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 47.

The square root of 2521427897 is about 50213.8217724961. The cubic root of 2521427897 is about 1361.0753996000.

The spelling of 2521427897 in words is "two billion, five hundred twenty-one million, four hundred twenty-seven thousand, eight hundred ninety-seven".