540407481 has 16 divisors (see below), whose sum is σ = 760784640. Its totient is φ = 340266960.

The previous prime is 540407477. The next prime is 540407501. The reversal of 540407481 is 184704045.

It is not a de Polignac number, because 540407481 - 2² = 540407477 is a prime.

It is a super-2 number, since 2×540407481² = 584080491041530722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (540407401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4546 + ... + 33188.

It is an arithmetic number, because the mean of its divisors is an integer number (47549040).

Almost surely, 2^540407481 is an apocalyptic number.

It is an amenable number.

540407481 is a deficient number, since it is larger than the sum of its proper divisors (220377159).

540407481 is a wasteful number, since it uses less digits than its factorization.

540407481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28996.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 540407481 is about 23246.6660190230. Note that the first 3 decimals coincide. The cubic root of 540407481 is about 814.5300619246.

The spelling of 540407481 in words is "five hundred forty million, four hundred seven thousand, four hundred eighty-one".