2100539 has 8 divisors (see below), whose sum is σ = 2423520. Its totient is φ = 1783296.

The previous prime is 2100533. The next prime is 2100541. The reversal of 2100539 is 9350012.

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

It is a cyclic number.

It is not a de Polignac number, because 2100539 - 2⁴ = 2100523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100539.

It is not an unprimeable number, because it can be changed into a prime (2100533) 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, 614 + ... + 2139.

It is an arithmetic number, because the mean of its divisors is an integer number (302940).

2^2100539 is an apocalyptic number.

2100539 is a deficient number, since it is larger than the sum of its proper divisors (322981).

2100539 is a wasteful number, since it uses less digits than its factorization.

2100539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 2100539 is about 1449.3236353555. The cubic root of 2100539 is about 128.0688716277.

The spelling of 2100539 in words is "two million, one hundred thousand, five hundred thirty-nine".