75390081 has 16 divisors (see below), whose sum is σ = 113951040. Its totient is φ = 43951680.

The previous prime is 75390061. The next prime is 75390101. The reversal of 75390081 is 18009357.

It is an interprime number because it is at equal distance from previous prime (75390061) and next prime (75390101).

It is not a de Polignac number, because 75390081 - 2⁶ = 75390017 is a prime.

It is a super-2 number, since 2×75390081² = 11367328626373122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75390011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50130 + ... + 51611.

It is an arithmetic number, because the mean of its divisors is an integer number (7121940).

Almost surely, 2^75390081 is an apocalyptic number.

It is an amenable number.

75390081 is a deficient number, since it is larger than the sum of its proper divisors (38560959).

75390081 is a wasteful number, since it uses less digits than its factorization.

75390081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101776.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 75390081 is about 8682.7461669681. The cubic root of 75390081 is about 422.4461955456.

The spelling of 75390081 in words is "seventy-five million, three hundred ninety thousand, eighty-one".