551421566 has 8 divisors (see below), whose sum is σ = 829350984. Its totient is φ = 274971240.

The previous prime is 551421547. The next prime is 551421599. The reversal of 551421566 is 665124155.

551421566 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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368840 + ... + 370331.

It is an arithmetic number, because the mean of its divisors is an integer number (103668873).

Almost surely, 2^551421566 is an apocalyptic number.

551421566 is a deficient number, since it is larger than the sum of its proper divisors (277929418).

551421566 is a wasteful number, since it uses less digits than its factorization.

551421566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739546.

The product of its digits is 36000, while the sum is 35.

The square root of 551421566 is about 23482.3671294016. The cubic root of 551421566 is about 820.0265537703.

The spelling of 551421566 in words is "five hundred fifty-one million, four hundred twenty-one thousand, five hundred sixty-six".