540455647 has 2 divisors, whose sum is σ = 540455648. Its totient is φ = 540455646.

The previous prime is 540455639. The next prime is 540455651. The reversal of 540455647 is 746554045.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 540455647 - 2³ = 540455639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540425647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270227823 + 270227824.

It is an arithmetic number, because the mean of its divisors is an integer number (270227824).

Almost surely, 2^540455647 is an apocalyptic number.

540455647 is a deficient number, since it is larger than the sum of its proper divisors (1).

540455647 is an equidigital number, since it uses as much as digits as its factorization.

540455647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336000, while the sum is 40.

The square root of 540455647 is about 23247.7019724531. The cubic root of 540455647 is about 814.5542606332.

The spelling of 540455647 in words is "five hundred forty million, four hundred fifty-five thousand, six hundred forty-seven".