2445538 has 4 divisors (see below), whose sum is σ = 3668310. Its totient is φ = 1222768.

The previous prime is 2445533. The next prime is 2445557. The reversal of 2445538 is 8355442.

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., 1471369 + 974169 = 1213^2 + 987^2 .

It is a super-2 number, since 2×2445538² = 11961312218888, which contains 22 as substring.

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 not an unprimeable number, because it can be changed into a prime (2445533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611383 + ... + 611386.

2^2445538 is an apocalyptic number.

2445538 is a deficient number, since it is larger than the sum of its proper divisors (1222772).

2445538 is a wasteful number, since it uses less digits than its factorization.

2445538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222771.

The product of its digits is 19200, while the sum is 31.

The square root of 2445538 is about 1563.8216010786. The cubic root of 2445538 is about 134.7280855130.

The spelling of 2445538 in words is "two million, four hundred forty-five thousand, five hundred thirty-eight".