548406861 has 16 divisors (see below), whose sum is σ = 779443200. Its totient is φ = 341975088.

The previous prime is 548406851. The next prime is 548406869. The reversal of 548406861 is 168604845.

It is not a de Polignac number, because 548406861 - 2²³ = 540018253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548406869) 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, 56391 + ... + 65396.

It is an arithmetic number, because the mean of its divisors is an integer number (48715200).

Almost surely, 2^548406861 is an apocalyptic number.

It is an amenable number.

548406861 is a deficient number, since it is larger than the sum of its proper divisors (231036339).

548406861 is a wasteful number, since it uses less digits than its factorization.

548406861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121888.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 548406861 is about 23418.0883293236. The cubic root of 548406861 is about 818.5294190779.

The spelling of 548406861 in words is "five hundred forty-eight million, four hundred six thousand, eight hundred sixty-one".