2538917 has 2 divisors, whose sum is σ = 2538918. Its totient is φ = 2538916.

The previous prime is 2538883. The next prime is 2538919. The reversal of 2538917 is 7198352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2353156 + 185761 = 1534^2 + 431^2 .

It is a cyclic number.

It is not a de Polignac number, because 2538917 - 2¹² = 2534821 is a prime.

Together with 2538919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2538919) 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, 1269458 + 1269459.

It is an arithmetic number, because the mean of its divisors is an integer number (1269459).

2^2538917 is an apocalyptic number.

It is an amenable number.

2538917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2538917 is an equidigital number, since it uses as much as digits as its factorization.

2538917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 2538917 is about 1593.3979415074. The cubic root of 2538917 is about 136.4215044225.

The spelling of 2538917 in words is "two million, five hundred thirty-eight thousand, nine hundred seventeen".