220516257 has 8 divisors (see below), whose sum is σ = 316638784. Its totient is φ = 135702288.

The previous prime is 220516243. The next prime is 220516267. The reversal of 220516257 is 752615022.

220516257 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 not a de Polignac number, because 220516257 - 2¹⁰ = 220515233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220516267) 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, 2827093 + ... + 2827170.

It is an arithmetic number, because the mean of its divisors is an integer number (39579848).

Almost surely, 2^220516257 is an apocalyptic number.

It is an amenable number.

220516257 is a deficient number, since it is larger than the sum of its proper divisors (96122527).

220516257 is a wasteful number, since it uses less digits than its factorization.

220516257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5654279.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 220516257 is about 14849.7897964921. The cubic root of 220516257 is about 604.1529087082.

The spelling of 220516257 in words is "two hundred twenty million, five hundred sixteen thousand, two hundred fifty-seven".