2531245 has 8 divisors (see below), whose sum is σ = 3048984. Its totient is φ = 2017344.

The previous prime is 2531233. The next prime is 2531261. The reversal of 2531245 is 5421352.

It can be written as a sum of positive squares in 4 ways, for example, as 31684 + 2499561 = 178^2 + 1581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2531245 - 2⁷ = 2531117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787 + ... + 2383.

It is an arithmetic number, because the mean of its divisors is an integer number (381123).

2^2531245 is an apocalyptic number.

It is an amenable number.

2531245 is a deficient number, since it is larger than the sum of its proper divisors (517739).

2531245 is a wasteful number, since it uses less digits than its factorization.

2531245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919.

The product of its digits is 1200, while the sum is 22.

The square root of 2531245 is about 1590.9886863206. The cubic root of 2531245 is about 136.2839547280.

Adding to 2531245 its reverse (5421352), we get a palindrome (7952597).

The spelling of 2531245 in words is "two million, five hundred thirty-one thousand, two hundred forty-five".