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80101 = 711443

80101 has 4 divisors (see below), whose sum is σ = 91552. Its totient is φ = 68652.

The previous prime is 80077. The next prime is 80107. The reversal of 80101 is 10108.

80101 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

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 80101 - 27 = 79973 is a prime.

It is a Duffinian number.

80101 is a modest number, since divided by 101 gives 8 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80107) 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, 5715 + ... + 5728.

It is an arithmetic number, because the mean of its divisors is an integer number (22888).

280101 is an apocalyptic number.

It is an amenable number.

80101 is a deficient number, since it is larger than the sum of its proper divisors (11451).

80101 is a wasteful number, since it uses less digits than its factorization.

80101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11450.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 80101 is about 283.0212006193. The cubic root of 80101 is about 43.1068193336.

Adding to 80101 its reverse (10108), we get a palindrome (90209).

It can be divided in two parts, 80 and 101, that added together give a palindrome (181).

The spelling of 80101 in words is "eighty thousand, one hundred one".

Divisors: 1 7 11443 80101