548660091 has 64 divisors (see below), whose sum is σ = 917250048. Its totient is φ = 284594688.

The previous prime is 548660071. The next prime is 548660107. The reversal of 548660091 is 190066845.

It is not a de Polignac number, because 548660091 - 2⁶ = 548660027 is a prime.

It is a super-2 number, since 2×548660091² = 602055790912256562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (548660011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1580980 + ... + 1581326.

It is an arithmetic number, because the mean of its divisors is an integer number (14332032).

Almost surely, 2^548660091 is an apocalyptic number.

548660091 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

548660091 is a deficient number, since it is larger than the sum of its proper divisors (368589957).

548660091 is a wasteful number, since it uses less digits than its factorization.

548660091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 548660091 is about 23423.4944233349. The cubic root of 548660091 is about 818.6553865691.

The spelling of 548660091 in words is "five hundred forty-eight million, six hundred sixty thousand, ninety-one".