549647538 has 16 divisors (see below), whose sum is σ = 1199231136. Its totient is φ = 166559840.

The previous prime is 549647503. The next prime is 549647557. The reversal of 549647538 is 835746945.

It is a super-2 number, since 2×549647538² = 604224832058922888, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4163931 + ... + 4164062.

It is an arithmetic number, because the mean of its divisors is an integer number (74951946).

Almost surely, 2^549647538 is an apocalyptic number.

549647538 is an abundant number, since it is smaller than the sum of its proper divisors (649583598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549647538 is a wasteful number, since it uses less digits than its factorization.

549647538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8328009.

The product of its digits is 3628800, while the sum is 51.

The square root of 549647538 is about 23444.5630797420. The cubic root of 549647538 is about 819.1462152535.

The spelling of 549647538 in words is "five hundred forty-nine million, six hundred forty-seven thousand, five hundred thirty-eight".