540202241 has 2 divisors, whose sum is σ = 540202242. Its totient is φ = 540202240.

The previous prime is 540202213. The next prime is 540202259. The reversal of 540202241 is 142202045.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321162241 + 219040000 = 17921^2 + 14800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540202241 is a prime.

It is a super-2 number, since 2×540202241² = 583636922362844162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (540205241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270101120 + 270101121.

It is an arithmetic number, because the mean of its divisors is an integer number (270101121).

Almost surely, 2^540202241 is an apocalyptic number.

It is an amenable number.

540202241 is a deficient number, since it is larger than the sum of its proper divisors (1).

540202241 is an equidigital number, since it uses as much as digits as its factorization.

540202241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 540202241 is about 23242.2512033581. The cubic root of 540202241 is about 814.4269327589.

Adding to 540202241 its reverse (142202045), we get a palindrome (682404286).

The spelling of 540202241 in words is "five hundred forty million, two hundred two thousand, two hundred forty-one".