540138087 has 6 divisors (see below), whose sum is σ = 780199472. Its totient is φ = 360092052.

The previous prime is 540138083. The next prime is 540138119. The reversal of 540138087 is 780831045.

540138087 is a `hidden beast` number, since 540 + 1 + 38 + 0 + 87 = 666.

It is not a de Polignac number, because 540138087 - 2² = 540138083 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 (540138083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30007663 + ... + 30007680.

Almost surely, 2^540138087 is an apocalyptic number.

540138087 is a deficient number, since it is larger than the sum of its proper divisors (240061385).

540138087 is a wasteful number, since it uses less digits than its factorization.

540138087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60015349 (or 60015346 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 540138087 is about 23240.8710464991. The cubic root of 540138087 is about 814.3946912452.

The spelling of 540138087 in words is "five hundred forty million, one hundred thirty-eight thousand, eighty-seven".