75256129 has 8 divisors (see below), whose sum is σ = 81630080. Its totient is φ = 68965776.

The previous prime is 75256109. The next prime is 75256133. The reversal of 75256129 is 92165257.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75256129 - 2⁷ = 75256001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75256109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19017 + ... + 22630.

It is an arithmetic number, because the mean of its divisors is an integer number (10203760).

Almost surely, 2^75256129 is an apocalyptic number.

It is an amenable number.

75256129 is a deficient number, since it is larger than the sum of its proper divisors (6373951).

75256129 is a wasteful number, since it uses less digits than its factorization.

75256129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41799.

The product of its digits is 37800, while the sum is 37.

The square root of 75256129 is about 8675.0290489427. The cubic root of 75256129 is about 422.1958484629.

The spelling of 75256129 in words is "seventy-five million, two hundred fifty-six thousand, one hundred twenty-nine".