2135197 has 2 divisors, whose sum is σ = 2135198. Its totient is φ = 2135196.

The previous prime is 2135191. The next prime is 2135207. The reversal of 2135197 is 7915312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2134521 + 676 = 1461^2 + 26^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2135197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067598 + 1067599.

It is an arithmetic number, because the mean of its divisors is an integer number (1067599).

2^2135197 is an apocalyptic number.

It is an amenable number.

2135197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135197 is an equidigital number, since it uses as much as digits as its factorization.

2135197 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 2135197 is about 1461.2313300775. The cubic root of 2135197 is about 128.7693935030.

It can be divided in two parts, 2135 and 197, that added together give a palindrome (2332).

The spelling of 2135197 in words is "two million, one hundred thirty-five thousand, one hundred ninety-seven".