2521679 has 8 divisors (see below), whose sum is σ = 2605488. Its totient is φ = 2439360.

The previous prime is 2521643. The next prime is 2521681. The reversal of 2521679 is 9761252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2521679 - 2¹² = 2517583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3779 + ... + 4395.

It is an arithmetic number, because the mean of its divisors is an integer number (325686).

2^2521679 is an apocalyptic number.

2521679 is a deficient number, since it is larger than the sum of its proper divisors (83809).

2521679 is an equidigital number, since it uses as much as digits as its factorization.

2521679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745.

The product of its digits is 7560, while the sum is 32.

The square root of 2521679 is about 1587.9795338732. The cubic root of 2521679 is about 136.1120580186.

The spelling of 2521679 in words is "two million, five hundred twenty-one thousand, six hundred seventy-nine".