2538945 has 20 divisors (see below), whose sum is σ = 4552020. Its totient is φ = 1353888.

The previous prime is 2538919. The next prime is 2538953. The reversal of 2538945 is 5498352.

It can be written as a sum of positive squares in 2 ways, for example, as 859329 + 1679616 = 927^2 + 1296^2 .

It is not a de Polignac number, because 2538945 - 2⁷ = 2538817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2730 + ... + 3539.

It is an arithmetic number, because the mean of its divisors is an integer number (227601).

2^2538945 is an apocalyptic number.

It is an amenable number.

2538945 is a deficient number, since it is larger than the sum of its proper divisors (2013075).

2538945 is an equidigital number, since it uses as much as digits as its factorization.

2538945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286 (or 6277 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 2538945 is about 1593.4067277378. The cubic root of 2538945 is about 136.4220059208.

The spelling of 2538945 in words is "two million, five hundred thirty-eight thousand, nine hundred forty-five".