2521430239 has 2 divisors, whose sum is σ = 2521430240. Its totient is φ = 2521430238.

The previous prime is 2521430213. The next prime is 2521430287. The reversal of 2521430239 is 9320341252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2521430239 - 2¹³ = 2521422047 is a prime.

It is a super-2 number, since 2×2521430239² = 12715220900287194242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2521430239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2521430209) 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, 1260715119 + 1260715120.

It is an arithmetic number, because the mean of its divisors is an integer number (1260715120).

Almost surely, 2^2521430239 is an apocalyptic number.

2521430239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521430239 is an equidigital number, since it uses as much as digits as its factorization.

2521430239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2521430239 is about 50213.8450927630. The cubic root of 2521430239 is about 1361.0758210064.

The spelling of 2521430239 in words is "two billion, five hundred twenty-one million, four hundred thirty thousand, two hundred thirty-nine".