2520091 has 8 divisors (see below), whose sum is σ = 2898144. Its totient is φ = 2146560.

The previous prime is 2520079. The next prime is 2520121. The reversal of 2520091 is 1900252.

2520091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2520091 - 2⁹ = 2519579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171 + ... + 2251.

It is an arithmetic number, because the mean of its divisors is an integer number (362268).

2^2520091 is an apocalyptic number.

2520091 is a deficient number, since it is larger than the sum of its proper divisors (378053).

2520091 is a wasteful number, since it uses less digits than its factorization.

2520091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2520091 is about 1587.4794486859. The cubic root of 2520091 is about 136.0834803215.

The spelling of 2520091 in words is "two million, five hundred twenty thousand, ninety-one".