2502321391 has 2 divisors, whose sum is σ = 2502321392. Its totient is φ = 2502321390.

The previous prime is 2502321379. The next prime is 2502321397. The reversal of 2502321391 is 1931232052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2502321391 - 2¹¹ = 2502319343 is a prime.

It is a super-2 number, since 2×2502321391² = 12523224687712349762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2502321397) 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, 1251160695 + 1251160696.

It is an arithmetic number, because the mean of its divisors is an integer number (1251160696).

Almost surely, 2^2502321391 is an apocalyptic number.

2502321391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2502321391 is an equidigital number, since it uses as much as digits as its factorization.

2502321391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 2502321391 is about 50023.2085236443. The cubic root of 2502321391 is about 1357.6287599830.

The spelling of 2502321391 in words is "two billion, five hundred two million, three hundred twenty-one thousand, three hundred ninety-one".