555221873 has 8 divisors (see below), whose sum is σ = 573511680. Its totient is φ = 536955840.

The previous prime is 555221869. The next prime is 555221879. The reversal of 555221873 is 378122555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 555221873 - 2² = 555221869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555221879) 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, 50048 + ... + 60126.

It is an arithmetic number, because the mean of its divisors is an integer number (71688960).

Almost surely, 2^555221873 is an apocalyptic number.

It is an amenable number.

555221873 is a deficient number, since it is larger than the sum of its proper divisors (18289807).

555221873 is a wasteful number, since it uses less digits than its factorization.

555221873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11887.

The product of its digits is 84000, while the sum is 38.

The square root of 555221873 is about 23563.1465004146. The cubic root of 555221873 is about 821.9060720912.

The spelling of 555221873 in words is "five hundred fifty-five million, two hundred twenty-one thousand, eight hundred seventy-three".