2521164487 has 2 divisors, whose sum is σ = 2521164488. Its totient is φ = 2521164486.

The previous prime is 2521164463. The next prime is 2521164493. The reversal of 2521164487 is 7844611252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2521164487 - 2²³ = 2512775879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2521164407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260582243 + 1260582244.

It is an arithmetic number, because the mean of its divisors is an integer number (1260582244).

Almost surely, 2^2521164487 is an apocalyptic number.

2521164487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521164487 is an equidigital number, since it uses as much as digits as its factorization.

2521164487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 2521164487 is about 50211.1988205818. The cubic root of 2521164487 is about 1361.0280014099.

It can be divided in two parts, 25211 and 64487, that added together give a palindrome (89698).

The spelling of 2521164487 in words is "two billion, five hundred twenty-one million, one hundred sixty-four thousand, four hundred eighty-seven".