540452221 has 4 divisors (see below), whose sum is σ = 540698652. Its totient is φ = 540205792.

The previous prime is 540452177. The next prime is 540452249. The reversal of 540452221 is 122254045.

540452221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 527391225 + 13060996 = 22965^2 + 3614^2 .

It is a cyclic number.

It is not a de Polignac number, because 540452221 - 2²³ = 532063613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540452291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119896 + ... + 124321.

It is an arithmetic number, because the mean of its divisors is an integer number (135174663).

Almost surely, 2^540452221 is an apocalyptic number.

It is an amenable number.

540452221 is a deficient number, since it is larger than the sum of its proper divisors (246431).

540452221 is a wasteful number, since it uses less digits than its factorization.

540452221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246430.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 540452221 is about 23247.6282876340. The cubic root of 540452221 is about 814.5525394504.

The spelling of 540452221 in words is "five hundred forty million, four hundred fifty-two thousand, two hundred twenty-one".