2152162565 has 12 divisors (see below), whose sum is σ = 3004243596. Its totient is φ = 1475768448.

The previous prime is 2152162553. The next prime is 2152162591. The reversal of 2152162565 is 5652612512.

It can be written as a sum of positive squares in 2 ways, for example, as 1227941764 + 924220801 = 35042^2 + 30401^2 .

It is not a de Polignac number, because 2152162565 - 2²⁴ = 2135385349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4391924 + ... + 4392413.

It is an arithmetic number, because the mean of its divisors is an integer number (250353633).

Almost surely, 2^2152162565 is an apocalyptic number.

It is an amenable number.

2152162565 is a deficient number, since it is larger than the sum of its proper divisors (852081031).

2152162565 is an equidigital number, since it uses as much as digits as its factorization.

2152162565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8784356 (or 8784349 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 2152162565 is about 46391.4061545886. The cubic root of 2152162565 is about 1291.0954709185.

The spelling of 2152162565 in words is "two billion, one hundred fifty-two million, one hundred sixty-two thousand, five hundred sixty-five".