540012061 has 4 divisors (see below), whose sum is σ = 543133692. Its totient is φ = 536890432.

The previous prime is 540012059. The next prime is 540012097. The reversal of 540012061 is 160210045.

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 427248900 + 112763161 = 20670^2 + 10619^2 .

It is a cyclic number.

It is not a de Polignac number, because 540012061 - 2¹ = 540012059 is a prime.

It is a super-2 number, since 2×540012061² = 583226052050935442, 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 (540012461) 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, 1560556 + ... + 1560901.

It is an arithmetic number, because the mean of its divisors is an integer number (135783423).

Almost surely, 2^540012061 is an apocalyptic number.

It is an amenable number.

540012061 is a deficient number, since it is larger than the sum of its proper divisors (3121631).

540012061 is a wasteful number, since it uses less digits than its factorization.

540012061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121630.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 540012061 is about 23238.1595871962. The cubic root of 540012061 is about 814.3313476353.

The spelling of 540012061 in words is "five hundred forty million, twelve thousand, sixty-one".