550764491 has 4 divisors (see below), whose sum is σ = 569756400. Its totient is φ = 531772584.

The previous prime is 550764481. The next prime is 550764493. The reversal of 550764491 is 194467055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550764491 - 2⁶ = 550764427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550764493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9495911 + ... + 9495968.

It is an arithmetic number, because the mean of its divisors is an integer number (142439100).

Almost surely, 2^550764491 is an apocalyptic number.

550764491 is a deficient number, since it is larger than the sum of its proper divisors (18991909).

550764491 is a wasteful number, since it uses less digits than its factorization.

550764491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18991908.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 550764491 is about 23468.3721420980. The cubic root of 550764491 is about 819.7007092368.

The spelling of 550764491 in words is "five hundred fifty million, seven hundred sixty-four thousand, four hundred ninety-one".