549888657 has 4 divisors (see below), whose sum is σ = 733184880. Its totient is φ = 366592436.

The previous prime is 549888649. The next prime is 549888667. The reversal of 549888657 is 756888945.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 549888657 - 2³ = 549888649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 549888657.

It is not an unprimeable number, because it can be changed into a prime (549888607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91648107 + ... + 91648112.

It is an arithmetic number, because the mean of its divisors is an integer number (183296220).

Almost surely, 2^549888657 is an apocalyptic number.

It is an amenable number.

549888657 is a deficient number, since it is larger than the sum of its proper divisors (183296223).

549888657 is a wasteful number, since it uses less digits than its factorization.

549888657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183296222.

The product of its digits is 19353600, while the sum is 60.

The square root of 549888657 is about 23449.7048382277. The cubic root of 549888657 is about 819.2659785734.

The spelling of 549888657 in words is "five hundred forty-nine million, eight hundred eighty-eight thousand, six hundred fifty-seven".