540970581 has 4 divisors (see below), whose sum is σ = 721294112. Its totient is φ = 360647052.

The previous prime is 540970579. The next prime is 540970609. The reversal of 540970581 is 185079045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 540970581 - 2¹ = 540970579 is a prime.

It is a super-2 number, since 2×540970581² = 585298339014955122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540970561) 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, 90161761 + ... + 90161766.

It is an arithmetic number, because the mean of its divisors is an integer number (180323528).

Almost surely, 2^540970581 is an apocalyptic number.

It is an amenable number.

540970581 is a deficient number, since it is larger than the sum of its proper divisors (180323531).

540970581 is a wasteful number, since it uses less digits than its factorization.

540970581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180323530.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 540970581 is about 23258.7742798282. The cubic root of 540970581 is about 814.8128748506.

The spelling of 540970581 in words is "five hundred forty million, nine hundred seventy thousand, five hundred eighty-one".