75066137 has 2 divisors, whose sum is σ = 75066138. Its totient is φ = 75066136.

The previous prime is 75066133. The next prime is 75066139. The reversal of 75066137 is 73166057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50751376 + 24314761 = 7124^2 + 4931^2 .

It is a cyclic number.

It is not a de Polignac number, because 75066137 - 2² = 75066133 is a prime.

Together with 75066139, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 75066097 and 75066106.

It is not a weakly prime, because it can be changed into another prime (75066133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37533068 + 37533069.

It is an arithmetic number, because the mean of its divisors is an integer number (37533069).

Almost surely, 2^75066137 is an apocalyptic number.

It is an amenable number.

75066137 is a deficient number, since it is larger than the sum of its proper divisors (1).

75066137 is an equidigital number, since it uses as much as digits as its factorization.

75066137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 75066137 is about 8664.0716178942. The cubic root of 75066137 is about 421.8402564675.

The spelling of 75066137 in words is "seventy-five million, sixty-six thousand, one hundred thirty-seven".