540602591 has 4 divisors (see below), whose sum is σ = 548216784. Its totient is φ = 532988400.

The previous prime is 540602581. The next prime is 540602593. The reversal of 540602591 is 195206045.

It is a happy number.

540602591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195206045 = 5 ⋅39041209.

It is a cyclic number.

It is not a de Polignac number, because 540602591 - 2²² = 536408287 is a prime.

It is a super-2 number, since 2×540602591² = 584502322791826562, 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 (540602593) 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, 3806990 + ... + 3807131.

It is an arithmetic number, because the mean of its divisors is an integer number (137054196).

Almost surely, 2^540602591 is an apocalyptic number.

540602591 is a deficient number, since it is larger than the sum of its proper divisors (7614193).

540602591 is an equidigital number, since it uses as much as digits as its factorization.

540602591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7614192.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 540602591 is about 23250.8621560578. The cubic root of 540602591 is about 814.6280767522.

The spelling of 540602591 in words is "five hundred forty million, six hundred two thousand, five hundred ninety-one".