2538651 has 4 divisors (see below), whose sum is σ = 3384872. Its totient is φ = 1692432.

The previous prime is 2538623. The next prime is 2538659. The reversal of 2538651 is 1568352.

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

It is not a de Polignac number, because 2538651 - 2⁵ = 2538619 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2538659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423106 + ... + 423111.

It is an arithmetic number, because the mean of its divisors is an integer number (846218).

2^2538651 is an apocalyptic number.

2538651 is a deficient number, since it is larger than the sum of its proper divisors (846221).

2538651 is an equidigital number, since it uses as much as digits as its factorization.

2538651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846220.

The product of its digits is 7200, while the sum is 30.

The square root of 2538651 is about 1593.3144699023. The cubic root of 2538651 is about 136.4167400042.

Subtracting from 2538651 its reverse (1568352), we obtain a cube (970299 = 99³).

The spelling of 2538651 in words is "two million, five hundred thirty-eight thousand, six hundred fifty-one".