2563165 has 16 divisors (see below), whose sum is σ = 3473280. Its totient is φ = 1798720.

The previous prime is 2563153. The next prime is 2563181. The reversal of 2563165 is 5613652.

It is not a de Polignac number, because 2563165 - 2¹³ = 2554973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 792 + ... + 2398.

It is an arithmetic number, because the mean of its divisors is an integer number (217080).

2^2563165 is an apocalyptic number.

It is an amenable number.

2563165 is a deficient number, since it is larger than the sum of its proper divisors (910115).

2563165 is a wasteful number, since it uses less digits than its factorization.

2563165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652.

The product of its digits is 5400, while the sum is 28.

The square root of 2563165 is about 1600.9887569874. The cubic root of 2563165 is about 136.8544282866.

It can be divided in two parts, 25 and 63165, that added together give a triangular number (63190 = T₃₅₅).

The spelling of 2563165 in words is "two million, five hundred sixty-three thousand, one hundred sixty-five".