2051297165 has 8 divisors (see below), whose sum is σ = 2546438040. Its totient is φ = 1584450112.

The previous prime is 2051297161. The next prime is 2051297177. The reversal of 2051297165 is 5617921502.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 157828969 + 1893468196 = 12563^2 + 43514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2051297165 - 2² = 2051297161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051297161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7073294 + ... + 7073583.

It is an arithmetic number, because the mean of its divisors is an integer number (318304755).

Almost surely, 2^2051297165 is an apocalyptic number.

It is an amenable number.

2051297165 is a deficient number, since it is larger than the sum of its proper divisors (495140875).

2051297165 is a wasteful number, since it uses less digits than its factorization.

2051297165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14146911.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 2051297165 is about 45291.2482164049. The cubic root of 2051297165 is about 1270.6019765908.

The spelling of 2051297165 in words is "two billion, fifty-one million, two hundred ninety-seven thousand, one hundred sixty-five".