555422220 has 72 divisors (see below), whose sum is σ = 1687454496. Its totient is φ = 147877632.

The previous prime is 555422213. The next prime is 555422221. The reversal of 555422220 is 22224555.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (555422221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131664 + ... + 135816.

It is an arithmetic number, because the mean of its divisors is an integer number (23436868).

Almost surely, 2^555422220 is an apocalyptic number.

It is an amenable number.

555422220 is an abundant number, since it is smaller than the sum of its proper divisors (1132032276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555422220 is a wasteful number, since it uses less digits than its factorization.

555422220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911 (or 4906 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 555422220 is about 23567.3973955547. The cubic root of 555422220 is about 822.0049194300.

Adding to 555422220 its reverse (22224555), we get a palindrome (577646775).

The spelling of 555422220 in words is "five hundred fifty-five million, four hundred twenty-two thousand, two hundred twenty".