2137859 has 2 divisors, whose sum is σ = 2137860. Its totient is φ = 2137858.

The previous prime is 2137841. The next prime is 2137871. The reversal of 2137859 is 9587312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2137859 is a prime.

It is a super-2 number, since 2×2137859² = 9140882207762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2137829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068929 + 1068930.

It is an arithmetic number, because the mean of its divisors is an integer number (1068930).

2^2137859 is an apocalyptic number.

2137859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2137859 is an equidigital number, since it uses as much as digits as its factorization.

2137859 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 2137859 is about 1462.1419219761. The cubic root of 2137859 is about 128.8228845504.

The spelling of 2137859 in words is "two million, one hundred thirty-seven thousand, eight hundred fifty-nine".