2801257 has 2 divisors, whose sum is σ = 2801258. Its totient is φ = 2801256.

The previous prime is 2801251. The next prime is 2801273. The reversal of 2801257 is 7521082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2277081 + 524176 = 1509^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 2801257 - 2¹⁵ = 2768489 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2801251) 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 as a sum of consecutive naturals, namely, 1400628 + 1400629.

It is an arithmetic number, because the mean of its divisors is an integer number (1400629).

2^2801257 is an apocalyptic number.

It is an amenable number.

2801257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2801257 is an equidigital number, since it uses as much as digits as its factorization.

2801257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2801257 is about 1673.6956115136. The cubic root of 2801257 is about 140.9670630442.

The spelling of 2801257 in words is "two million, eight hundred one thousand, two hundred fifty-seven".