801005081 has 4 divisors (see below), whose sum is σ = 802408464. Its totient is φ = 799601700.

The previous prime is 801005039. The next prime is 801005087. The reversal of 801005081 is 180500108.

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 801005081 - 2²⁶ = 733896217 is a prime.

It is a super-2 number, since 2×801005081² = 1283218279575633122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801005087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700835 + ... + 701976.

It is an arithmetic number, because the mean of its divisors is an integer number (200602116).

Almost surely, 2^801005081 is an apocalyptic number.

It is an amenable number.

801005081 is a deficient number, since it is larger than the sum of its proper divisors (1403383).

801005081 is a wasteful number, since it uses less digits than its factorization.

801005081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403382.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 801005081 is about 28302.0331601813. The cubic root of 801005081 is about 928.7063684234.

Adding to 801005081 its reverse (180500108), we get a palindrome (981505189).

The spelling of 801005081 in words is "eight hundred one million, five thousand, eighty-one".