2115397 has 2 divisors, whose sum is σ = 2115398. Its totient is φ = 2115396.

The previous prime is 2115371. The next prime is 2115427. The reversal of 2115397 is 7935112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1473796 + 641601 = 1214^2 + 801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057698 + 1057699.

It is an arithmetic number, because the mean of its divisors is an integer number (1057699).

2^2115397 is an apocalyptic number.

It is an amenable number.

2115397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115397 is an equidigital number, since it uses as much as digits as its factorization.

2115397 is an evil number, because the sum of its binary digits is even.

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

The square root of 2115397 is about 1454.4404422320. The cubic root of 2115397 is about 128.3701241943.

The spelling of 2115397 in words is "two million, one hundred fifteen thousand, three hundred ninety-seven".