802811001 has 4 divisors (see below), whose sum is σ = 1070414672. Its totient is φ = 535207332.

The previous prime is 802810997. The next prime is 802811017. The reversal of 802811001 is 100118208.

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 not a de Polignac number, because 802811001 - 2² = 802810997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (802811071) 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, 133801831 + ... + 133801836.

It is an arithmetic number, because the mean of its divisors is an integer number (267603668).

Almost surely, 2^802811001 is an apocalyptic number.

It is an amenable number.

802811001 is a deficient number, since it is larger than the sum of its proper divisors (267603671).

802811001 is a wasteful number, since it uses less digits than its factorization.

802811001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267603670.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 802811001 is about 28333.9196194243. The cubic root of 802811001 is about 929.4037882819.

Adding to 802811001 its reverse (100118208), we get a palindrome (902929209).

The spelling of 802811001 in words is "eight hundred two million, eight hundred eleven thousand, one".