75037009 has 2 divisors, whose sum is σ = 75037010. Its totient is φ = 75037008.

The previous prime is 75036991. The next prime is 75037013. The reversal of 75037009 is 90073057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54760000 + 20277009 = 7400^2 + 4503^2 .

It is an emirp because it is prime and its reverse (90073057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75037009 - 2⁷ = 75036881 is a prime.

It is not a weakly prime, because it can be changed into another prime (75037069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37518504 + 37518505.

It is an arithmetic number, because the mean of its divisors is an integer number (37518505).

Almost surely, 2^75037009 is an apocalyptic number.

It is an amenable number.

75037009 is a deficient number, since it is larger than the sum of its proper divisors (1).

75037009 is an equidigital number, since it uses as much as digits as its factorization.

75037009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6615, while the sum is 31.

The square root of 75037009 is about 8662.3904899283. The cubic root of 75037009 is about 421.7856870211.

The spelling of 75037009 in words is "seventy-five million, thirty-seven thousand, nine".