540473 has 4 divisors (see below), whose sum is σ = 559140. Its totient is φ = 521808.

The previous prime is 540469. The next prime is 540509. The reversal of 540473 is 374045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94249 + 446224 = 307^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 540473 - 2² = 540469 is a prime.

It is a super-2 number, since 2×540473² = 584222127458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9290 + ... + 9347.

It is an arithmetic number, because the mean of its divisors is an integer number (139785).

2⁵⁴⁰⁴⁷³ is an apocalyptic number.

It is an amenable number.

540473 is a deficient number, since it is larger than the sum of its proper divisors (18667).

540473 is a wasteful number, since it uses less digits than its factorization.

540473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18666.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 540473 is about 735.1686881254. The cubic root of 540473 is about 81.4562978468.

The spelling of 540473 in words is "five hundred forty thousand, four hundred seventy-three".