550145131 has 4 divisors (see below), whose sum is σ = 553025664. Its totient is φ = 547264600.

The previous prime is 550145117. The next prime is 550145137. The reversal of 550145131 is 131541055.

It is a happy number.

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 550145131 - 2⁹ = 550144619 is a prime.

It is a super-2 number, since 2×550145131² = 605319330326014322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 550145096 and 550145105.

It is not an unprimeable number, because it can be changed into a prime (550145137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439980 + ... + 1440361.

It is an arithmetic number, because the mean of its divisors is an integer number (138256416).

Almost surely, 2^550145131 is an apocalyptic number.

550145131 is a deficient number, since it is larger than the sum of its proper divisors (2880533).

550145131 is a wasteful number, since it uses less digits than its factorization.

550145131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880532.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 550145131 is about 23455.1727983402. The cubic root of 550145131 is about 819.3933302721.

Adding to 550145131 its reverse (131541055), we get a palindrome (681686186).

The spelling of 550145131 in words is "five hundred fifty million, one hundred forty-five thousand, one hundred thirty-one".