2521269 has 12 divisors (see below), whose sum is σ = 3655756. Its totient is φ = 1674432.

The previous prime is 2521249. The next prime is 2521271. The reversal of 2521269 is 9621252.

It can be written as a sum of positive squares in 2 ways, for example, as 864900 + 1656369 = 930^2 + 1287^2 .

It is not a de Polignac number, because 2521269 - 2¹¹ = 2519221 is a prime.

It is a super-2 number, since 2×2521269² = 12713594740722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3807 + ... + 4419.

2^2521269 is an apocalyptic number.

It is an amenable number.

2521269 is a deficient number, since it is larger than the sum of its proper divisors (1134487).

2521269 is a wasteful number, since it uses less digits than its factorization.

2521269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1073 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 2521269 is about 1587.8504337626. The cubic root of 2521269 is about 136.1046807951.

It can be divided in two parts, 25212 and 69, that added together give a square (25281 = 159²).

The spelling of 2521269 in words is "two million, five hundred twenty-one thousand, two hundred sixty-nine".