2501165 has 4 divisors (see below), whose sum is σ = 3001404. Its totient is φ = 2000928.

The previous prime is 2501143. The next prime is 2501171. The reversal of 2501165 is 5611052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 635209 + 1865956 = 797^2 + 1366^2 .

It is a cyclic number.

It is not a de Polignac number, because 2501165 - 2⁶ = 2501101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250112 + ... + 250121.

It is an arithmetic number, because the mean of its divisors is an integer number (750351).

2^2501165 is an apocalyptic number.

It is an amenable number.

2501165 is a deficient number, since it is larger than the sum of its proper divisors (500239).

2501165 is an equidigital number, since it uses as much as digits as its factorization.

2501165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500238.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 2501165 is about 1581.5071925224. The cubic root of 2501165 is about 135.7419595327.

The spelling of 2501165 in words is "two million, five hundred one thousand, one hundred sixty-five".