2563901 has 2 divisors, whose sum is σ = 2563902. Its totient is φ = 2563900.

The previous prime is 2563877. The next prime is 2563907. The reversal of 2563901 is 1093652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2328676 + 235225 = 1526^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 2563901 - 2⁶ = 2563837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2563907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281950 + 1281951.

It is an arithmetic number, because the mean of its divisors is an integer number (1281951).

2^2563901 is an apocalyptic number.

It is an amenable number.

2563901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563901 is an equidigital number, since it uses as much as digits as its factorization.

2563901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 2563901 is about 1601.2185984431. The cubic root of 2563901 is about 136.8675260544.

The spelling of 2563901 in words is "two million, five hundred sixty-three thousand, nine hundred one".