2135917 has 4 divisors (see below), whose sum is σ = 2441056. Its totient is φ = 1830780.

The previous prime is 2135909. The next prime is 2135921. The reversal of 2135917 is 7195312.

2135917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2135917 - 2³ = 2135909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152559 + ... + 152572.

It is an arithmetic number, because the mean of its divisors is an integer number (610264).

2^2135917 is an apocalyptic number.

It is an amenable number.

2135917 is a deficient number, since it is larger than the sum of its proper divisors (305139).

2135917 is an equidigital number, since it uses as much as digits as its factorization.

2135917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305138.

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

The square root of 2135917 is about 1461.4776768736. The cubic root of 2135917 is about 128.7838657889.

The spelling of 2135917 in words is "two million, one hundred thirty-five thousand, nine hundred seventeen".