2115937 has 2 divisors, whose sum is σ = 2115938. Its totient is φ = 2115936.

The previous prime is 2115923. The next prime is 2115943. The reversal of 2115937 is 7395112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1083681 + 1032256 = 1041^2 + 1016^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115937 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2115437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057968 + 1057969.

It is an arithmetic number, because the mean of its divisors is an integer number (1057969).

2^2115937 is an apocalyptic number.

It is an amenable number.

2115937 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115937 is an equidigital number, since it uses as much as digits as its factorization.

2115937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 28.

The square root of 2115937 is about 1454.6260687888. The cubic root of 2115937 is about 128.3810463316.

It can be divided in two parts, 211593 and 7, that added together give a square (211600 = 460²).

The spelling of 2115937 in words is "two million, one hundred fifteen thousand, nine hundred thirty-seven".