81075301 has 4 divisors (see below), whose sum is σ = 81289600. Its totient is φ = 80861004.

The previous prime is 81075277. The next prime is 81075307. The reversal of 81075301 is 10357018.

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 81075301 - 2²¹ = 78978149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81075307) 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 3 ways as a sum of consecutive naturals, for example, 106581 + ... + 107338.

It is an arithmetic number, because the mean of its divisors is an integer number (20322400).

Almost surely, 2^81075301 is an apocalyptic number.

It is an amenable number.

81075301 is a deficient number, since it is larger than the sum of its proper divisors (214299).

81075301 is a wasteful number, since it uses less digits than its factorization.

81075301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214298.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 81075301 is about 9004.1824170771. The cubic root of 81075301 is about 432.8089071396.

The spelling of 81075301 in words is "eighty-one million, seventy-five thousand, three hundred one".