2538861 has 8 divisors (see below), whose sum is σ = 3645600. Its totient is φ = 1562352.

The previous prime is 2538839. The next prime is 2538871. The reversal of 2538861 is 1688352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2538861 - 2⁷ = 2538733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32511 + ... + 32588.

It is an arithmetic number, because the mean of its divisors is an integer number (455700).

2^2538861 is an apocalyptic number.

It is an amenable number.

2538861 is a deficient number, since it is larger than the sum of its proper divisors (1106739).

2538861 is a wasteful number, since it uses less digits than its factorization.

2538861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65115.

The product of its digits is 11520, while the sum is 33.

The square root of 2538861 is about 1593.3803689013. The cubic root of 2538861 is about 136.4205014147.

The spelling of 2538861 in words is "two million, five hundred thirty-eight thousand, eight hundred sixty-one".