548074921 has 9 divisors (see below), whose sum is σ = 562754199. Its totient is φ = 533770800.

The previous prime is 548074907. The next prime is 548074957. The reversal of 548074921 is 129470845.

The square root of 548074921 is 23411.

It is a perfect power (a square), and thus also a powerful number.

548074921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 26409321 + 521665600 = 5139^2 + 22840^2 .

It is not a de Polignac number, because 548074921 - 2²³ = 539686313 is a prime.

It is a super-2 number, since 2×548074921² = 600772238058312482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (548074991) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 959566 + ... + 960136.

Almost surely, 2^548074921 is an apocalyptic number.

548074921 is the 23411-st square number.

548074921 is the 11706-th centered octagonal number.

It is an amenable number.

548074921 is a deficient number, since it is larger than the sum of its proper divisors (14679278).

548074921 is an frugal number, since it uses more digits than its factorization.

548074921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The cubic root of 548074921 is about 818.3642391043.

The spelling of 548074921 in words is "five hundred forty-eight million, seventy-four thousand, nine hundred twenty-one".