500000005551 has 8 divisors (see below), whose sum is σ = 667850808960. Its totient is φ = 332741269592.

The previous prime is 500000005543. The next prime is 500000005553. The reversal of 500000005551 is 155500000005.

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 500000005551 - 2³ = 500000005543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500000005553) 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, 148014891 + ... + 148018268.

It is an arithmetic number, because the mean of its divisors is an integer number (83481351120).

Almost surely, 2^500000005551 is an apocalyptic number.

500000005551 is a deficient number, since it is larger than the sum of its proper divisors (167850803409).

500000005551 is a wasteful number, since it uses less digits than its factorization.

500000005551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296033725.

The product of its (nonzero) digits is 625, while the sum is 21.

Adding to 500000005551 its reverse (155500000005), we get a palindrome (655500005556).

The spelling of 500000005551 in words is "five hundred billion, five thousand, five hundred fifty-one".