550397591 has 8 divisors (see below), whose sum is σ = 568533504. Its totient is φ = 532285560.

The previous prime is 550397587. The next prime is 550397611. The reversal of 550397591 is 195793055.

550397591 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 cyclic number.

It is not a de Polignac number, because 550397591 - 2² = 550397587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550397191) 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, 49076 + ... + 59238.

It is an arithmetic number, because the mean of its divisors is an integer number (71066688).

Almost surely, 2^550397591 is an apocalyptic number.

550397591 is a deficient number, since it is larger than the sum of its proper divisors (18135913).

550397591 is a wasteful number, since it uses less digits than its factorization.

550397591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11941.

The product of its (nonzero) digits is 212625, while the sum is 44.

The square root of 550397591 is about 23460.5539363417. The cubic root of 550397591 is about 819.5186501761.

The spelling of 550397591 in words is "five hundred fifty million, three hundred ninety-seven thousand, five hundred ninety-one".