75138269 has 2 divisors, whose sum is σ = 75138270. Its totient is φ = 75138268.

The previous prime is 75138253. The next prime is 75138353. The reversal of 75138269 is 96283157.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50268100 + 24870169 = 7090^2 + 4987^2 .

It is an emirp because it is prime and its reverse (96283157) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75138269 - 2⁴ = 75138253 is a prime.

It is a super-2 number, since 2×75138269² = 11291518936632722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75138209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37569134 + 37569135.

It is an arithmetic number, because the mean of its divisors is an integer number (37569135).

Almost surely, 2^75138269 is an apocalyptic number.

It is an amenable number.

75138269 is a deficient number, since it is larger than the sum of its proper divisors (1).

75138269 is an equidigital number, since it uses as much as digits as its factorization.

75138269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 75138269 is about 8668.2333263474. The cubic root of 75138269 is about 421.9753304237.

The spelling of 75138269 in words is "seventy-five million, one hundred thirty-eight thousand, two hundred sixty-nine".