75450073 has 2 divisors, whose sum is σ = 75450074. Its totient is φ = 75450072.

The previous prime is 75450049. The next prime is 75450077. The reversal of 75450073 is 37005457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48274704 + 27175369 = 6948^2 + 5213^2 .

It is an emirp because it is prime and its reverse (37005457) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75450073 - 2⁵ = 75450041 is a prime.

It is not a weakly prime, because it can be changed into another prime (75450077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37725036 + 37725037.

It is an arithmetic number, because the mean of its divisors is an integer number (37725037).

Almost surely, 2^75450073 is an apocalyptic number.

It is an amenable number.

75450073 is a deficient number, since it is larger than the sum of its proper divisors (1).

75450073 is an equidigital number, since it uses as much as digits as its factorization.

75450073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 75450073 is about 8686.2001473602. The cubic root of 75450073 is about 422.5582203302.

The spelling of 75450073 in words is "seventy-five million, four hundred fifty thousand, seventy-three".