2495521 has 6 divisors (see below), whose sum is σ = 2903010. Its totient is φ = 2138976.

The previous prime is 2495509. The next prime is 2495527. The reversal of 2495521 is 1255942.

It can be written as a sum of positive squares in only one way, i.e., 1535121 + 960400 = 1239^2 + 980^2 .

It is not a de Polignac number, because 2495521 - 2⁵ = 2495489 is a prime.

It is a super-2 number, since 2×2495521² = 12455250122882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2495521.

It is not an unprimeable number, because it can be changed into a prime (2495527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25416 + ... + 25513.

It is an arithmetic number, because the mean of its divisors is an integer number (483835).

2^2495521 is an apocalyptic number.

It is an amenable number.

2495521 is a deficient number, since it is larger than the sum of its proper divisors (407489).

2495521 is an equidigital number, since it uses as much as digits as its factorization.

2495521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50943 (or 50936 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 2495521 is about 1579.7218109528. The cubic root of 2495521 is about 135.6397798669.

It can be divided in two parts, 24955 and 21, that added together give a triangular number (24976 = T₂₂₃).

The spelling of 2495521 in words is "two million, four hundred ninety-five thousand, five hundred twenty-one".