2521670 has 16 divisors (see below), whose sum is σ = 4557168. Its totient is φ = 1004640.

The previous prime is 2521643. The next prime is 2521681. The reversal of 2521670 is 761252.

2521670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4337 + ... + 4883.

It is an arithmetic number, because the mean of its divisors is an integer number (284823).

2^2521670 is an apocalyptic number.

2521670 is a deficient number, since it is larger than the sum of its proper divisors (2035498).

2521670 is a wasteful number, since it uses less digits than its factorization.

2521670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2521670 is about 1587.9767000810. The cubic root of 2521670 is about 136.1118960882. Note that the first 3 decimals are identical.

The spelling of 2521670 in words is "two million, five hundred twenty-one thousand, six hundred seventy".