75265139 has 2 divisors, whose sum is σ = 75265140. Its totient is φ = 75265138.

The previous prime is 75265129. The next prime is 75265193. The reversal of 75265139 is 93156257.

It is a happy number.

Together with next prime (75265193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75265139 - 2⁸ = 75264883 is a prime.

It is a super-2 number, since 2×75265139² = 11329682297378642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75265109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37632569 + 37632570.

It is an arithmetic number, because the mean of its divisors is an integer number (37632570).

Almost surely, 2^75265139 is an apocalyptic number.

75265139 is a deficient number, since it is larger than the sum of its proper divisors (1).

75265139 is an equidigital number, since it uses as much as digits as its factorization.

75265139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 38.

The square root of 75265139 is about 8675.5483400186. The cubic root of 75265139 is about 422.2126968483.

The spelling of 75265139 in words is "seventy-five million, two hundred sixty-five thousand, one hundred thirty-nine".