2526721 has 2 divisors, whose sum is σ = 2526722. Its totient is φ = 2526720.

The previous prime is 2526709. The next prime is 2526743. The reversal of 2526721 is 1276252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2436721 + 90000 = 1561^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 2526721 - 2¹¹ = 2524673 is a prime.

It is not a weakly prime, because it can be changed into another prime (2526781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1263360 + 1263361.

It is an arithmetic number, because the mean of its divisors is an integer number (1263361).

2^2526721 is an apocalyptic number.

It is an amenable number.

2526721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2526721 is an equidigital number, since it uses as much as digits as its factorization.

2526721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 2526721 is about 1589.5662930498. The cubic root of 2526721 is about 136.2027145625.

The spelling of 2526721 in words is "two million, five hundred twenty-six thousand, seven hundred twenty-one".