550495291 has 4 divisors (see below), whose sum is σ = 550643184. Its totient is φ = 550347400.

The previous prime is 550495289. The next prime is 550495321. The reversal of 550495291 is 192594055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192594055 = 5 ⋅38518811.

It is a cyclic number.

It is not a de Polignac number, because 550495291 - 2¹ = 550495289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550495201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68215 + ... + 75856.

It is an arithmetic number, because the mean of its divisors is an integer number (137660796).

Almost surely, 2^550495291 is an apocalyptic number.

550495291 is a deficient number, since it is larger than the sum of its proper divisors (147893).

550495291 is a wasteful number, since it uses less digits than its factorization.

550495291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147892.

The product of its (nonzero) digits is 81000, while the sum is 40.

The square root of 550495291 is about 23462.6360624718. The cubic root of 550495291 is about 819.5671376916.

The spelling of 550495291 in words is "five hundred fifty million, four hundred ninety-five thousand, two hundred ninety-one".