2520257 has 2 divisors, whose sum is σ = 2520258. Its totient is φ = 2520256.

The previous prime is 2520251. The next prime is 2520263. The reversal of 2520257 is 7520252.

It is a balanced prime because it is at equal distance from previous prime (2520251) and next prime (2520263).

It can be written as a sum of positive squares in only one way, i.e., 2483776 + 36481 = 1576^2 + 191^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520257 - 2⁴ = 2520241 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2⁷ + 5⁶ + 2¹⁴ + 0 + 2²¹ + 5⁸ + 7³ .

It is not a weakly prime, because it can be changed into another prime (2520251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260128 + 1260129.

It is an arithmetic number, because the mean of its divisors is an integer number (1260129).

2^2520257 is an apocalyptic number.

It is an amenable number.

2520257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520257 is an equidigital number, since it uses as much as digits as its factorization.

2520257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 2520257 is about 1587.5317319663. The cubic root of 2520257 is about 136.0864682244.

The spelling of 2520257 in words is "two million, five hundred twenty thousand, two hundred fifty-seven".