2536139 has 4 divisors (see below), whose sum is σ = 2669640. Its totient is φ = 2402640.

The previous prime is 2536133. The next prime is 2536147. The reversal of 2536139 is 9316352.

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

It is a cyclic number.

It is not a de Polignac number, because 2536139 - 2⁴ = 2536123 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2²¹ + 5⁷ + 3¹¹ + 6 + 1 + 3¹¹ + 9⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2536133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66722 + ... + 66759.

It is an arithmetic number, because the mean of its divisors is an integer number (667410).

2^2536139 is an apocalyptic number.

2536139 is a deficient number, since it is larger than the sum of its proper divisors (133501).

2536139 is a wasteful number, since it uses less digits than its factorization.

2536139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133500.

The product of its digits is 4860, while the sum is 29.

The square root of 2536139 is about 1592.5259809498. The cubic root of 2536139 is about 136.3717302805.

The spelling of 2536139 in words is "two million, five hundred thirty-six thousand, one hundred thirty-nine".