2508538 has 4 divisors (see below), whose sum is σ = 3762810. Its totient is φ = 1254268.

The previous prime is 2508521. The next prime is 2508557. The reversal of 2508538 is 8358052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2486929 + 21609 = 1577^2 + 147^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627133 + ... + 627136.

2^2508538 is an apocalyptic number.

2508538 is a deficient number, since it is larger than the sum of its proper divisors (1254272).

2508538 is a wasteful number, since it uses less digits than its factorization.

2508538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254271.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 2508538 is about 1583.8364814589. The cubic root of 2508538 is about 135.8752099253.

The spelling of 2508538 in words is "two million, five hundred eight thousand, five hundred thirty-eight".