540021455 has 8 divisors (see below), whose sum is σ = 663831504. Its totient is φ = 421480000.

The previous prime is 540021437. The next prime is 540021467. The reversal of 540021455 is 554120045.

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

It is a de Polignac number, because none of the positive numbers 2^k-540021455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316921 + ... + 1317330.

It is an arithmetic number, because the mean of its divisors is an integer number (82978938).

Almost surely, 2^540021455 is an apocalyptic number.

540021455 is a deficient number, since it is larger than the sum of its proper divisors (123810049).

540021455 is a wasteful number, since it uses less digits than its factorization.

540021455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634297.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 540021455 is about 23238.3617107575. The cubic root of 540021455 is about 814.3360696190.

The spelling of 540021455 in words is "five hundred forty million, twenty-one thousand, four hundred fifty-five".