555431130221 has 8 divisors (see below), whose sum is σ = 611924126688. Its totient is φ = 499938010000.

The previous prime is 555431130131. The next prime is 555431130263. The reversal of 555431130221 is 122031134555.

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

It is a de Polignac number, because none of the positive numbers 2^k-555431130221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555431133221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249967895 + ... + 249970116.

It is an arithmetic number, because the mean of its divisors is an integer number (76490515836).

Almost surely, 2^555431130221 is an apocalyptic number.

It is an amenable number.

555431130221 is a deficient number, since it is larger than the sum of its proper divisors (56492996467).

555431130221 is a wasteful number, since it uses less digits than its factorization.

555431130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499938123.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 555431130221 its reverse (122031134555), we get a palindrome (677462264776).

The spelling of 555431130221 in words is "five hundred fifty-five billion, four hundred thirty-one million, one hundred thirty thousand, two hundred twenty-one".