75005081 has 4 divisors (see below), whose sum is σ = 75044112. Its totient is φ = 74966052.

The previous prime is 75005041. The next prime is 75005101. The reversal of 75005081 is 18050057.

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 a de Polignac number, because none of the positive numbers 2^k-75005081 is a prime.

It is a super-2 number, since 2×75005081² = 11251524351633122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75005081.

It is not an unprimeable number, because it can be changed into a prime (75005041) 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, 16475 + ... + 20528.

It is an arithmetic number, because the mean of its divisors is an integer number (18761028).

Almost surely, 2^75005081 is an apocalyptic number.

It is an amenable number.

75005081 is a deficient number, since it is larger than the sum of its proper divisors (39031).

75005081 is a wasteful number, since it uses less digits than its factorization.

75005081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39030.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 75005081 is about 8660.5473845479. The cubic root of 75005081 is about 421.7258557278.

The spelling of 75005081 in words is "seventy-five million, five thousand, eighty-one".