2665251 has 8 divisors (see below), whose sum is σ = 3948560. Its totient is φ = 1776816.

The previous prime is 2665249. The next prime is 2665253. The reversal of 2665251 is 1525662.

2665251 is a `hidden beast` number, since 2 + 6 + 652 + 5 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (2665249) and next prime (2665253).

It is not a de Polignac number, because 2665251 - 2¹ = 2665249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 98713 = 2665251 / (2 + 6 + 6 + 5 + 2 + 5 + 1).

It is a d-powerful number, because it can be written as 2¹⁶ + 6⁵ + 6⁸ + 5⁸ + 2¹⁷ + 5⁸ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2665253) 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, 49330 + ... + 49383.

It is an arithmetic number, because the mean of its divisors is an integer number (493570).

2^2665251 is an apocalyptic number.

2665251 is a deficient number, since it is larger than the sum of its proper divisors (1283309).

2665251 is an equidigital number, since it uses as much as digits as its factorization.

2665251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98722 (or 98716 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2665251 is about 1632.5596466898. The cubic root of 2665251 is about 138.6477113153.

It can be divided in two parts, 2665 and 251, that added together give a square (2916 = 54²).

The spelling of 2665251 in words is "two million, six hundred sixty-five thousand, two hundred fifty-one".