2531524 has 6 divisors (see below), whose sum is σ = 4430174. Its totient is φ = 1265760.

The previous prime is 2531519. The next prime is 2531527. The reversal of 2531524 is 4251352.

It can be written as a sum of positive squares in only one way, i.e., 2458624 + 72900 = 1568^2 + 270^2 .

It is a super-2 number, since 2×2531524² = 12817227525152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2531495 and 2531504.

It is not an unprimeable number, because it can be changed into a prime (2531527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316437 + ... + 316444.

2^2531524 is an apocalyptic number.

It is an amenable number.

2531524 is a deficient number, since it is larger than the sum of its proper divisors (1898650).

2531524 is a wasteful number, since it uses less digits than its factorization.

2531524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632885 (or 632883 counting only the distinct ones).

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

The square root of 2531524 is about 1591.0763652320. The cubic root of 2531524 is about 136.2889617274.

Adding to 2531524 its reverse (4251352), we get a palindrome (6782876).

The spelling of 2531524 in words is "two million, five hundred thirty-one thousand, five hundred twenty-four".