220804523 has 4 divisors (see below), whose sum is σ = 221021808. Its totient is φ = 220587240.

The previous prime is 220804513. The next prime is 220804541. The reversal of 220804523 is 325408022.

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 220804523 - 2¹⁸ = 220542379 is a prime.

It is a super-3 number, since 3×220804523³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220804492 and 220804501.

It is not an unprimeable number, because it can be changed into a prime (220804513) 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, 107111 + ... + 109152.

It is an arithmetic number, because the mean of its divisors is an integer number (55255452).

Almost surely, 2^220804523 is an apocalyptic number.

220804523 is a deficient number, since it is larger than the sum of its proper divisors (217285).

220804523 is a wasteful number, since it uses less digits than its factorization.

220804523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217284.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 220804523 is about 14859.4926898599. The cubic root of 220804523 is about 604.4160501686.

The spelling of 220804523 in words is "two hundred twenty million, eight hundred four thousand, five hundred twenty-three".