550999405 has 16 divisors (see below), whose sum is σ = 731472768. Its totient is φ = 395080000.

The previous prime is 550999403. The next prime is 550999409. The reversal of 550999405 is 504999055.

It is not a de Polignac number, because 550999405 - 2¹ = 550999403 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 (550999403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66646 + ... + 74455.

It is an arithmetic number, because the mean of its divisors is an integer number (45717048).

Almost surely, 2^550999405 is an apocalyptic number.

550999405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

550999405 is a deficient number, since it is larger than the sum of its proper divisors (180473363).

550999405 is a wasteful number, since it uses less digits than its factorization.

550999405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141188.

The product of its (nonzero) digits is 364500, while the sum is 46.

The square root of 550999405 is about 23473.3765146815. The cubic root of 550999405 is about 819.8172332109.

The spelling of 550999405 in words is "five hundred fifty million, nine hundred ninety-nine thousand, four hundred five".