540341581 has 4 divisors (see below), whose sum is σ = 581906332. Its totient is φ = 498776832.

The previous prime is 540341579. The next prime is 540341587. The reversal of 540341581 is 185143045.

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 358496356 + 181845225 = 18934^2 + 13485^2 .

It is a cyclic number.

It is not a de Polignac number, because 540341581 - 2¹ = 540341579 is a prime.

It is a super-2 number, since 2×540341581² = 583938048315159122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540341587) 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, 20782356 + ... + 20782381.

It is an arithmetic number, because the mean of its divisors is an integer number (145476583).

Almost surely, 2^540341581 is an apocalyptic number.

It is an amenable number.

540341581 is a deficient number, since it is larger than the sum of its proper divisors (41564751).

540341581 is a wasteful number, since it uses less digits than its factorization.

540341581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41564750.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 540341581 is about 23245.2485682558. The cubic root of 540341581 is about 814.4969512843.

The spelling of 540341581 in words is "five hundred forty million, three hundred forty-one thousand, five hundred eighty-one".