550436257 has 12 divisors (see below), whose sum is σ = 640685700. Its totient is φ = 471520896.

The previous prime is 550436219. The next prime is 550436261. The reversal of 550436257 is 752634055.

It can be written as a sum of positive squares in 2 ways, for example, as 189778176 + 360658081 = 13776^2 + 18991^2 .

It is a de Polignac number, because none of the positive numbers 2^k-550436257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550436657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157869 + ... + 161317.

It is an arithmetic number, because the mean of its divisors is an integer number (53390475).

Almost surely, 2^550436257 is an apocalyptic number.

It is an amenable number.

550436257 is a deficient number, since it is larger than the sum of its proper divisors (90249443).

550436257 is a wasteful number, since it uses less digits than its factorization.

550436257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720 (or 6713 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 550436257 is about 23461.3779859581. The cubic root of 550436257 is about 819.5378404043.

The spelling of 550436257 in words is "five hundred fifty million, four hundred thirty-six thousand, two hundred fifty-seven".