75478573 has 2 divisors, whose sum is σ = 75478574. Its totient is φ = 75478572.

The previous prime is 75478541. The next prime is 75478591. The reversal of 75478573 is 37587457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73051209 + 2427364 = 8547^2 + 1558^2 .

It is a cyclic number.

It is not a de Polignac number, because 75478573 - 2⁵ = 75478541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75478973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37739286 + 37739287.

It is an arithmetic number, because the mean of its divisors is an integer number (37739287).

Almost surely, 2^75478573 is an apocalyptic number.

It is an amenable number.

75478573 is a deficient number, since it is larger than the sum of its proper divisors (1).

75478573 is an equidigital number, since it uses as much as digits as its factorization.

75478573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 823200, while the sum is 46.

The square root of 75478573 is about 8687.8405257003. The cubic root of 75478573 is about 422.6114183935.

The spelling of 75478573 in words is "seventy-five million, four hundred seventy-eight thousand, five hundred seventy-three".