2180523 has 4 divisors (see below), whose sum is σ = 2907368. Its totient is φ = 1453680.

The previous prime is 2180501. The next prime is 2180527. The reversal of 2180523 is 3250812.

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

It is not a de Polignac number, because 2180523 - 2⁵ = 2180491 is a prime.

It is a D-number.

It is a Duffinian number.

2180523 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2180523.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180527) 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, 363418 + ... + 363423.

It is an arithmetic number, because the mean of its divisors is an integer number (726842).

2^2180523 is an apocalyptic number.

2180523 is a deficient number, since it is larger than the sum of its proper divisors (726845).

2180523 is an equidigital number, since it uses as much as digits as its factorization.

2180523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726844.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2180523 is about 1476.6594055502. The cubic root of 2180523 is about 129.6741940091.

The spelling of 2180523 in words is "two million, one hundred eighty thousand, five hundred twenty-three".