551987673 has 8 divisors (see below), whose sum is σ = 737448768. Its totient is φ = 367259184.

The previous prime is 551987651. The next prime is 551987717. The reversal of 551987673 is 376789155.

551987673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 551987673 - 2⁸ = 551987417 is a prime.

It is a super-2 number, since 2×551987673² = 609380782287909858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551987273) 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, 181390 + ... + 184407.

It is an arithmetic number, because the mean of its divisors is an integer number (92181096).

Almost surely, 2^551987673 is an apocalyptic number.

It is an amenable number.

551987673 is a deficient number, since it is larger than the sum of its proper divisors (185461095).

551987673 is a wasteful number, since it uses less digits than its factorization.

551987673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366303.

The product of its digits is 1587600, while the sum is 51.

The square root of 551987673 is about 23494.4179114955. The cubic root of 551987673 is about 820.3070796144.

The spelling of 551987673 in words is "five hundred fifty-one million, nine hundred eighty-seven thousand, six hundred seventy-three".