551000605506 has 64 divisors (see below), whose sum is σ = 1189435121280. Its totient is φ = 169158366720.

The previous prime is 551000605429. The next prime is 551000605523. The reversal of 551000605506 is 605506000155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114957046 + ... + 114961838.

It is an arithmetic number, because the mean of its divisors is an integer number (18584923770).

Almost surely, 2^551000605506 is an apocalyptic number.

551000605506 is an abundant number, since it is smaller than the sum of its proper divisors (638434515774).

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

551000605506 is a wasteful number, since it uses less digits than its factorization.

551000605506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7811.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 551000605506 in words is "five hundred fifty-one billion, six hundred five thousand, five hundred six".