540425261 has 2 divisors, whose sum is σ = 540425262. Its totient is φ = 540425260.

The previous prime is 540425239. The next prime is 540425267. The reversal of 540425261 is 162524045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 468073225 + 72352036 = 21635^2 + 8506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540425261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540425267) 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 as a sum of consecutive naturals, namely, 270212630 + 270212631.

It is an arithmetic number, because the mean of its divisors is an integer number (270212631).

Almost surely, 2^540425261 is an apocalyptic number.

It is an amenable number.

540425261 is a deficient number, since it is larger than the sum of its proper divisors (1).

540425261 is an equidigital number, since it uses as much as digits as its factorization.

540425261 is an odious number, because the sum of its binary digits is odd.

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

The square root of 540425261 is about 23247.0484363069. The cubic root of 540425261 is about 814.5389948047.

The spelling of 540425261 in words is "five hundred forty million, four hundred twenty-five thousand, two hundred sixty-one".