2135579 has 4 divisors (see below), whose sum is σ = 2140200. Its totient is φ = 2130960.

The previous prime is 2135563. The next prime is 2135597. The reversal of 2135579 is 9755312.

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 2135579 - 2⁴ = 2135563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135519) 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, 1529 + ... + 2570.

It is an arithmetic number, because the mean of its divisors is an integer number (535050).

2^2135579 is an apocalyptic number.

2135579 is a deficient number, since it is larger than the sum of its proper divisors (4621).

2135579 is an equidigital number, since it uses as much as digits as its factorization.

2135579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620.

The product of its digits is 9450, while the sum is 32.

The square root of 2135579 is about 1461.3620359103. The cubic root of 2135579 is about 128.7770722598. Note that the first 3 decimals are identical.

The spelling of 2135579 in words is "two million, one hundred thirty-five thousand, five hundred seventy-nine".