540216245 has 4 divisors (see below), whose sum is σ = 648259500. Its totient is φ = 432172992.

The previous prime is 540216239. The next prime is 540216247. The reversal of 540216245 is 542612045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542612045 = 5 ⋅108522409.

It can be written as a sum of positive squares in 2 ways, for example, as 223981156 + 316235089 = 14966^2 + 17783^2 .

It is a cyclic number.

It is not a de Polignac number, because 540216245 - 2¹² = 540212149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540216247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54021620 + ... + 54021629.

It is an arithmetic number, because the mean of its divisors is an integer number (162064875).

Almost surely, 2^540216245 is an apocalyptic number.

It is an amenable number.

540216245 is a deficient number, since it is larger than the sum of its proper divisors (108043255).

540216245 is a wasteful number, since it uses less digits than its factorization.

540216245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108043254.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 540216245 is about 23242.5524631009. The cubic root of 540216245 is about 814.4339703307.

The spelling of 540216245 in words is "five hundred forty million, two hundred sixteen thousand, two hundred forty-five".