548109861 has 16 divisors (see below), whose sum is σ = 787993920. Its totient is φ = 336885120.

The previous prime is 548109857. The next prime is 548109893. The reversal of 548109861 is 168901845.

548109861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 548109861 - 2² = 548109857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548109161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25321 + ... + 41681.

It is an arithmetic number, because the mean of its divisors is an integer number (49249620).

Almost surely, 2^548109861 is an apocalyptic number.

It is an amenable number.

548109861 is a deficient number, since it is larger than the sum of its proper divisors (239884059).

548109861 is a wasteful number, since it uses less digits than its factorization.

548109861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17236.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 548109861 is about 23411.7462185118. The cubic root of 548109861 is about 818.3816290862.

The spelling of 548109861 in words is "five hundred forty-eight million, one hundred nine thousand, eight hundred sixty-one".