540491597 has 8 divisors (see below), whose sum is σ = 555396600. Its totient is φ = 525602304.

The previous prime is 540491503. The next prime is 540491599. The reversal of 540491597 is 795194045.

It can be written as a sum of positive squares in 4 ways, for example, as 146627881 + 393863716 = 12109^2 + 19846^2 .

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 540491597 - 2¹² = 540487501 is a prime.

It is a super-2 number, since 2×540491597² = 584262332855220818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540491599) 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, 111929 + ... + 116657.

It is an arithmetic number, because the mean of its divisors is an integer number (69424575).

Almost surely, 2^540491597 is an apocalyptic number.

It is an amenable number.

540491597 is a deficient number, since it is larger than the sum of its proper divisors (14905003).

540491597 is a wasteful number, since it uses less digits than its factorization.

540491597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7855.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 540491597 is about 23248.4751542978. The cubic root of 540491597 is about 814.5723210584.

The spelling of 540491597 in words is "five hundred forty million, four hundred ninety-one thousand, five hundred ninety-seven".