220505241 has 64 divisors (see below), whose sum is σ = 356428800. Its totient is φ = 119750400.

The previous prime is 220505239. The next prime is 220505251. The reversal of 220505241 is 142505022.

It is a happy number.

It is not a de Polignac number, because 220505241 - 2¹ = 220505239 is a prime.

It is a super-2 number, since 2×220505241² = 97245122616936162, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220505231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1218171 + ... + 1218351.

It is an arithmetic number, because the mean of its divisors is an integer number (5569200).

Almost surely, 2^220505241 is an apocalyptic number.

It is an amenable number.

220505241 is a deficient number, since it is larger than the sum of its proper divisors (135923559).

220505241 is a wasteful number, since it uses less digits than its factorization.

220505241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 220505241 is about 14849.4188775184. The cubic root of 220505241 is about 604.1428482871.

The spelling of 220505241 in words is "two hundred twenty million, five hundred five thousand, two hundred forty-one".