550991383 has 8 divisors (see below), whose sum is σ = 575476560. Its totient is φ = 527011200.

The previous prime is 550991359. The next prime is 550991401. The reversal of 550991383 is 383199055.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550991383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550991083) 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, 124018 + ... + 128383.

It is an arithmetic number, because the mean of its divisors is an integer number (71934570).

Almost surely, 2^550991383 is an apocalyptic number.

550991383 is a deficient number, since it is larger than the sum of its proper divisors (24485177).

550991383 is a wasteful number, since it uses less digits than its factorization.

550991383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252497.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 550991383 is about 23473.2056396224. The cubic root of 550991383 is about 819.8132546187.

The spelling of 550991383 in words is "five hundred fifty million, nine hundred ninety-one thousand, three hundred eighty-three".