75050009 has 2 divisors, whose sum is σ = 75050010. Its totient is φ = 75050008.

The previous prime is 75049993. The next prime is 75050033. The reversal of 75050009 is 90005057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47224384 + 27825625 = 6872^2 + 5275^2 .

It is a cyclic number.

It is not a de Polignac number, because 75050009 - 2⁴ = 75049993 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75050009.

It is not a weakly prime, because it can be changed into another prime (75059009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37525004 + 37525005.

It is an arithmetic number, because the mean of its divisors is an integer number (37525005).

Almost surely, 2^75050009 is an apocalyptic number.

It is an amenable number.

75050009 is a deficient number, since it is larger than the sum of its proper divisors (1).

75050009 is an equidigital number, since it uses as much as digits as its factorization.

75050009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 26.

The square root of 75050009 is about 8663.1408276675. The cubic root of 75050009 is about 421.8100434348.

The spelling of 75050009 in words is "seventy-five million, fifty thousand, nine".