540664451 has 2 divisors, whose sum is σ = 540664452. Its totient is φ = 540664450.

The previous prime is 540664441. The next prime is 540664469. The reversal of 540664451 is 154466045.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540664451 is a prime.

It is not a weakly prime, because it can be changed into another prime (540664441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270332225 + 270332226.

It is an arithmetic number, because the mean of its divisors is an integer number (270332226).

Almost surely, 2^540664451 is an apocalyptic number.

540664451 is a deficient number, since it is larger than the sum of its proper divisors (1).

540664451 is an equidigital number, since it uses as much as digits as its factorization.

540664451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 540664451 is about 23252.1923912564. The cubic root of 540664451 is about 814.6591476175.

The spelling of 540664451 in words is "five hundred forty million, six hundred sixty-four thousand, four hundred fifty-one".