550133431 has 4 divisors (see below), whose sum is σ = 550930264. Its totient is φ = 549336600.

The previous prime is 550133411. The next prime is 550133497. The reversal of 550133431 is 134331055.

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 550133431 - 2⁵ = 550133399 is a prime.

It is a super-4 number, since 4×550133431⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 550133396 and 550133405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550133411) 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, 397380 + ... + 398761.

It is an arithmetic number, because the mean of its divisors is an integer number (137732566).

Almost surely, 2^550133431 is an apocalyptic number.

550133431 is a deficient number, since it is larger than the sum of its proper divisors (796833).

550133431 is an equidigital number, since it uses as much as digits as its factorization.

550133431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796832.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 550133431 is about 23454.9233850806. The cubic root of 550133431 is about 819.3875215200.

Adding to 550133431 its reverse (134331055), we get a palindrome (684464486).

It can be divided in two parts, 550133 and 431, that added together give a square (550564 = 742²).

The spelling of 550133431 in words is "five hundred fifty million, one hundred thirty-three thousand, four hundred thirty-one".