550145231 has 4 divisors (see below), whose sum is σ = 550339200. Its totient is φ = 549951264.

The previous prime is 550145227. The next prime is 550145263. The reversal of 550145231 is 132541055.

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 550145231 - 2² = 550145227 is a prime.

It is a super-2 number, since 2×550145231² = 605319550384086722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550145231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550145731) 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, 92666 + ... + 98423.

It is an arithmetic number, because the mean of its divisors is an integer number (137584800).

Almost surely, 2^550145231 is an apocalyptic number.

550145231 is a deficient number, since it is larger than the sum of its proper divisors (193969).

550145231 is a wasteful number, since it uses less digits than its factorization.

550145231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193968.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 550145231 is about 23455.1749300661. The cubic root of 550145231 is about 819.3933799192.

Adding to 550145231 its reverse (132541055), we get a palindrome (682686286).

The spelling of 550145231 in words is "five hundred fifty million, one hundred forty-five thousand, two hundred thirty-one".