540421573 has 2 divisors, whose sum is σ = 540421574. Its totient is φ = 540421572.

The previous prime is 540421537. The next prime is 540421589. The reversal of 540421573 is 375124045.

Together with previous prime (540421537) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407757249 + 132664324 = 20193^2 + 11518^2 .

It is a cyclic number.

It is not a de Polignac number, because 540421573 - 2¹³ = 540413381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540421523) 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, 270210786 + 270210787.

It is an arithmetic number, because the mean of its divisors is an integer number (270210787).

Almost surely, 2^540421573 is an apocalyptic number.

It is an amenable number.

540421573 is a deficient number, since it is larger than the sum of its proper divisors (1).

540421573 is an equidigital number, since it uses as much as digits as its factorization.

540421573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 540421573 is about 23246.9691142738. The cubic root of 540421573 is about 814.5371419264.

The spelling of 540421573 in words is "five hundred forty million, four hundred twenty-one thousand, five hundred seventy-three".