220048657 has 4 divisors (see below), whose sum is σ = 225995956. Its totient is φ = 214101360.

The previous prime is 220048651. The next prime is 220048711. The reversal of 220048657 is 756840022.

220048657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 756840022 = 2 ⋅378420011.

It can be written as a sum of positive squares in 2 ways, for example, as 114041041 + 106007616 = 10679^2 + 10296^2 .

It is a cyclic number.

It is not a de Polignac number, because 220048657 - 2²³ = 211660049 is a prime.

It is a super-2 number, since 2×220048657² = 96842822895007298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220048651) 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, 2973594 + ... + 2973667.

It is an arithmetic number, because the mean of its divisors is an integer number (56498989).

Almost surely, 2^220048657 is an apocalyptic number.

It is an amenable number.

220048657 is a deficient number, since it is larger than the sum of its proper divisors (5947299).

220048657 is an equidigital number, since it uses as much as digits as its factorization.

220048657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5947298.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 220048657 is about 14834.0371106452. The cubic root of 220048657 is about 603.7255754143.

Adding to 220048657 its reverse (756840022), we get a palindrome (976888679).

The spelling of 220048657 in words is "two hundred twenty million, forty-eight thousand, six hundred fifty-seven".