2574721 has 2 divisors, whose sum is σ = 2574722. Its totient is φ = 2574720.

The previous prime is 2574703. The next prime is 2574727. The reversal of 2574721 is 1274752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2283121 + 291600 = 1511^2 + 540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2574721 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2574721.

It is not a weakly prime, because it can be changed into another prime (2574727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1287360 + 1287361.

It is an arithmetic number, because the mean of its divisors is an integer number (1287361).

2^2574721 is an apocalyptic number.

It is an amenable number.

2574721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2574721 is an equidigital number, since it uses as much as digits as its factorization.

2574721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3920, while the sum is 28.

The square root of 2574721 is about 1604.5937180483. The cubic root of 2574721 is about 137.0597888465.

The spelling of 2574721 in words is "two million, five hundred seventy-four thousand, seven hundred twenty-one".