16520222 has 4 divisors (see below), whose sum is σ = 24780336. Its totient is φ = 8260110.

The previous prime is 16520201. The next prime is 16520239. The reversal of 16520222 is 22202561.

16520222 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: 22202561 = 17 ⋅1306033.

It is a junction number, because it is equal to n+sod(n) for n = 16520194 and 16520203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4130054 + ... + 4130057.

It is an arithmetic number, because the mean of its divisors is an integer number (6195084).

Almost surely, 2^16520222 is an apocalyptic number.

16520222 is a deficient number, since it is larger than the sum of its proper divisors (8260114).

16520222 is an equidigital number, since it uses as much as digits as its factorization.

16520222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8260113.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 16520222 is about 4064.5075962532. The cubic root of 16520222 is about 254.6861292686.

Adding to 16520222 its reverse (22202561), we get a palindrome (38722783).

The spelling of 16520222 in words is "sixteen million, five hundred twenty thousand, two hundred twenty-two".