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79081 = 312551
BaseRepresentation
bin10011010011101001
311000110221
4103103221
510012311
61410041
7446362
oct232351
9130427
1079081
1154462
1239921
1329cc2
1420b69
1518671
hex134e9

79081 has 4 divisors (see below), whose sum is σ = 81664. Its totient is φ = 76500.

The previous prime is 79063. The next prime is 79087. The reversal of 79081 is 18097.

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 79081 - 29 = 78569 is a prime.

It is a super-2 number, since 2×790812 = 12507609122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79087) 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, 1245 + ... + 1306.

It is an arithmetic number, because the mean of its divisors is an integer number (20416).

279081 is an apocalyptic number.

It is an amenable number.

79081 is a deficient number, since it is larger than the sum of its proper divisors (2583).

79081 is a wasteful number, since it uses less digits than its factorization.

79081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 79081 is about 281.2134420685. The cubic root of 79081 is about 42.9230641587.

The spelling of 79081 in words is "seventy-nine thousand, eighty-one".

Divisors: 1 31 2551 79081