2661250 has 20 divisors (see below), whose sum is σ = 4990590. Its totient is φ = 1064000.

The previous prime is 2661233. The next prime is 2661251. The reversal of 2661250 is 521662.

It can be written as a sum of positive squares in 5 ways, for example, as 1089 + 2660161 = 33^2 + 1631^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661251) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 186 + ... + 2314.

2^2661250 is an apocalyptic number.

2661250 is a deficient number, since it is larger than the sum of its proper divisors (2329340).

2661250 is an equidigital number, since it uses as much as digits as its factorization.

2661250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2661250 is about 1631.3338101075. Note that the first 3 decimals coincide. The cubic root of 2661250 is about 138.5782985526.

It can be divided in two parts, 26612 and 50, that added together give a palindrome (26662).

The spelling of 2661250 in words is "two million, six hundred sixty-one thousand, two hundred fifty".