550534401 has 20 divisors (see below), whose sum is σ = 825245652. Its totient is φ = 365754528.

The previous prime is 550534399. The next prime is 550534421. The reversal of 550534401 is 104435055.

It can be written as a sum of positive squares in 2 ways, for example, as 244109376 + 306425025 = 15624^2 + 17505^2 .

It is not a de Polignac number, because 550534401 - 2¹ = 550534399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (550534421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12135 + ... + 35331.

Almost surely, 2^550534401 is an apocalyptic number.

It is an amenable number.

550534401 is a deficient number, since it is larger than the sum of its proper divisors (274711251).

550534401 is a wasteful number, since it uses less digits than its factorization.

550534401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23502 (or 23493 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 550534401 is about 23463.4695004810. The cubic root of 550534401 is about 819.5865459785.

Adding to 550534401 its reverse (104435055), we get a palindrome (654969456).

The spelling of 550534401 in words is "five hundred fifty million, five hundred thirty-four thousand, four hundred one".