2135817 has 6 divisors (see below), whose sum is σ = 3085082. Its totient is φ = 1423872.

The previous prime is 2135797. The next prime is 2135831. The reversal of 2135817 is 7185312.

It can be written as a sum of positive squares in only one way, i.e., 2134521 + 1296 = 1461^2 + 36^2 .

It is not a de Polignac number, because 2135817 - 2⁶ = 2135753 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 3⁹ + 5³ + 8⁷ + 1 + 7⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118648 + ... + 118665.

2^2135817 is an apocalyptic number.

It is an amenable number.

2135817 is a deficient number, since it is larger than the sum of its proper divisors (949265).

2135817 is a wasteful number, since it uses less digits than its factorization.

2135817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237319 (or 237316 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 2135817 is about 1461.4434645240. The cubic root of 2135817 is about 128.7818559437.

The spelling of 2135817 in words is "two million, one hundred thirty-five thousand, eight hundred seventeen".