550539531 has 8 divisors (see below), whose sum is σ = 815614160. Its totient is φ = 367026336.

The previous prime is 550539527. The next prime is 550539533. The reversal of 550539531 is 135935055.

550539531 is a `hidden beast` number, since 550 + 53 + 9 + 53 + 1 = 666.

It is not a de Polignac number, because 550539531 - 2² = 550539527 is a prime.

It is a super-2 number, since 2×550539531² = 606187550387399922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550539533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10195150 + ... + 10195203.

It is an arithmetic number, because the mean of its divisors is an integer number (101951770).

Almost surely, 2^550539531 is an apocalyptic number.

550539531 is a deficient number, since it is larger than the sum of its proper divisors (265074629).

550539531 is a wasteful number, since it uses less digits than its factorization.

550539531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20390362 (or 20390356 counting only the distinct ones).

The product of its (nonzero) digits is 50625, while the sum is 36.

The square root of 550539531 is about 23463.5788190975. The cubic root of 550539531 is about 819.5890916662.

The spelling of 550539531 in words is "five hundred fifty million, five hundred thirty-nine thousand, five hundred thirty-one".