555005054991 has 8 divisors (see below), whose sum is σ = 740010889984. Its totient is φ = 370001295000.

The previous prime is 555005054983. The next prime is 555005054999. The reversal of 555005054991 is 199450500555.

It is an interprime number because it is at equal distance from previous prime (555005054983) and next prime (555005054999).

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

It is not a de Polignac number, because 555005054991 - 2³ = 555005054983 is a prime.

It is a super-2 number, since 2×555005054991² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 555005054991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555005054999) 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, 281880 + ... + 1090626.

It is an arithmetic number, because the mean of its divisors is an integer number (92501361248).

Almost surely, 2^555005054991 is an apocalyptic number.

555005054991 is a deficient number, since it is larger than the sum of its proper divisors (185005834993).

555005054991 is a wasteful number, since it uses less digits than its factorization.

555005054991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037501.

The product of its (nonzero) digits is 1012500, while the sum is 48.

The spelling of 555005054991 in words is "five hundred fifty-five billion, five million, fifty-four thousand, nine hundred ninety-one".