548970021 has 32 divisors (see below), whose sum is σ = 860016000. Its totient is φ = 345129984.

The previous prime is 548970017. The next prime is 548970077. The reversal of 548970021 is 120079845.

548970021 is a `hidden beast` number, since 548 + 97 + 0 + 0 + 21 = 666.

It is not a de Polignac number, because 548970021 - 2² = 548970017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548970091) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 115141 + ... + 119813.

It is an arithmetic number, because the mean of its divisors is an integer number (26875500).

Almost surely, 2^548970021 is an apocalyptic number.

It is an amenable number.

548970021 is a deficient number, since it is larger than the sum of its proper divisors (311045979).

548970021 is a wasteful number, since it uses less digits than its factorization.

548970021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4930 (or 4924 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 548970021 is about 23430.1092827157. The cubic root of 548970021 is about 818.8095063407.

The spelling of 548970021 in words is "five hundred forty-eight million, nine hundred seventy thousand, twenty-one".