75290081 has 4 divisors (see below), whose sum is σ = 76243200. Its totient is φ = 74336964.

The previous prime is 75290057. The next prime is 75290123. The reversal of 75290081 is 18009257.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75290081 - 2¹⁴ = 75273697 is a prime.

It is a super-2 number, since 2×75290081² = 11337192593973122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75290011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476441 + ... + 476598.

It is an arithmetic number, because the mean of its divisors is an integer number (19060800).

Almost surely, 2^75290081 is an apocalyptic number.

It is an amenable number.

75290081 is a deficient number, since it is larger than the sum of its proper divisors (953119).

75290081 is an equidigital number, since it uses as much as digits as its factorization.

75290081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953118.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 75290081 is about 8676.9857093348. The cubic root of 75290081 is about 422.2593305053.

The spelling of 75290081 in words is "seventy-five million, two hundred ninety thousand, eighty-one".