540072457 has 2 divisors, whose sum is σ = 540072458. Its totient is φ = 540072456.

The previous prime is 540072413. The next prime is 540072487. The reversal of 540072457 is 754270045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283720336 + 256352121 = 16844^2 + 16011^2 .

It is a cyclic number.

It is not a de Polignac number, because 540072457 - 2⁷ = 540072329 is a prime.

It is not a weakly prime, because it can be changed into another prime (540072487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270036228 + 270036229.

It is an arithmetic number, because the mean of its divisors is an integer number (270036229).

Almost surely, 2^540072457 is an apocalyptic number.

It is an amenable number.

540072457 is a deficient number, since it is larger than the sum of its proper divisors (1).

540072457 is an equidigital number, since it uses as much as digits as its factorization.

540072457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 540072457 is about 23239.4590513635. The cubic root of 540072457 is about 814.3617053046.

The spelling of 540072457 in words is "five hundred forty million, seventy-two thousand, four hundred fifty-seven".