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80802001 = 711543143
BaseRepresentation
bin1001101000011…
…11000011010001
312122001011111201
410310033003101
5131141131001
612003511201
72000543230
oct464170321
9178034451
1080802001
1141679815
1223088501
1313981447
14aa34b17
157161501
hex4d0f0d1

80802001 has 4 divisors (see below), whose sum is σ = 92345152. Its totient is φ = 69258852.

The previous prime is 80801989. The next prime is 80802017. The reversal of 80802001 is 10020808.

It is a happy number.

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 80802001 - 215 = 80769233 is a prime.

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 80802001.

It is not an unprimeable number, because it can be changed into a prime (80802101) 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, 5771565 + ... + 5771578.

It is an arithmetic number, because the mean of its divisors is an integer number (23086288).

Almost surely, 280802001 is an apocalyptic number.

It is an amenable number.

80802001 is a deficient number, since it is larger than the sum of its proper divisors (11543151).

80802001 is a wasteful number, since it uses less digits than its factorization.

80802001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11543150.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 80802001 is about 8988.9933251727. The cubic root of 80802001 is about 432.3220353271.

Adding to 80802001 its reverse (10020808), we get a palindrome (90822809).

The spelling of 80802001 in words is "eighty million, eight hundred two thousand, one".

Divisors: 1 7 11543143 80802001