2521429 has 2 divisors, whose sum is σ = 2521430. Its totient is φ = 2521428.

The previous prime is 2521417. The next prime is 2521451. The reversal of 2521429 is 9241252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2480625 + 40804 = 1575^2 + 202^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521429 - 2⁵ = 2521397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2521469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260714 + 1260715.

It is an arithmetic number, because the mean of its divisors is an integer number (1260715).

2^2521429 is an apocalyptic number.

It is an amenable number.

2521429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521429 is an equidigital number, since it uses as much as digits as its factorization.

2521429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 2521429 is about 1587.9008155423. The cubic root of 2521429 is about 136.1075598068.

It can be divided in two parts, 252 and 1429, that added together give a square (1681 = 41²).

The spelling of 2521429 in words is "two million, five hundred twenty-one thousand, four hundred twenty-nine".