540517547 has 4 divisors (see below), whose sum is σ = 541335936. Its totient is φ = 539699160.

The previous prime is 540517543. The next prime is 540517561. The reversal of 540517547 is 745715045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745715045 = 5 ⋅149143009.

It is a cyclic number.

It is not a de Polignac number, because 540517547 - 2² = 540517543 is a prime.

It is a super-2 number, since 2×540517547² = 584318437229794418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 540517547.

It is not an unprimeable number, because it can be changed into a prime (540517543) 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, 408203 + ... + 409524.

It is an arithmetic number, because the mean of its divisors is an integer number (135333984).

Almost surely, 2^540517547 is an apocalyptic number.

540517547 is a deficient number, since it is larger than the sum of its proper divisors (818389).

540517547 is an equidigital number, since it uses as much as digits as its factorization.

540517547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818388.

The product of its (nonzero) digits is 98000, while the sum is 38.

The square root of 540517547 is about 23249.0332487181. The cubic root of 540517547 is about 814.5853572237.

The spelling of 540517547 in words is "five hundred forty million, five hundred seventeen thousand, five hundred forty-seven".