540005405 has 8 divisors (see below), whose sum is σ = 651264000. Its totient is φ = 429832656.

The previous prime is 540005377. The next prime is 540005407. The reversal of 540005405 is 504500045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 540005405 - 2⁸ = 540005149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540005407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270365 + ... + 272354.

It is an arithmetic number, because the mean of its divisors is an integer number (81408000).

Almost surely, 2^540005405 is an apocalyptic number.

It is an amenable number.

540005405 is a deficient number, since it is larger than the sum of its proper divisors (111258595).

540005405 is a wasteful number, since it uses less digits than its factorization.

540005405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542923.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 540005405 is about 23238.0163740367. The cubic root of 540005405 is about 814.3280019004.

The spelling of 540005405 in words is "five hundred forty million, five thousand, four hundred five".