2621459 has 2 divisors, whose sum is σ = 2621460. Its totient is φ = 2621458.

The previous prime is 2621447. The next prime is 2621467. The reversal of 2621459 is 9541262.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2621459 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2621159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310729 + 1310730.

It is an arithmetic number, because the mean of its divisors is an integer number (1310730).

2^2621459 is an apocalyptic number.

2621459 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621459 is an equidigital number, since it uses as much as digits as its factorization.

2621459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 2621459 is about 1619.0920295030. The cubic root of 2621459 is about 137.8841532851.

The spelling of 2621459 in words is "two million, six hundred twenty-one thousand, four hundred fifty-nine".