Search a number
-
+
80561201 = 713187853
BaseRepresentation
bin1001100110101…
…00010000110001
312121120221012012
410303110100301
5131110424301
611554412305
71665521210
oct463242061
9177527165
1080561201
1141524906
1222b91095
13138c8966
14a9b1077
157114ebb
hex4cd4431

80561201 has 8 divisors (see below), whose sum is σ = 92773824. Its totient is φ = 68524560.

The previous prime is 80561191. The next prime is 80561207. The reversal of 80561201 is 10216508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80561201 - 226 = 13452337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80561207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43010 + ... + 44843.

It is an arithmetic number, because the mean of its divisors is an integer number (11596728).

Almost surely, 280561201 is an apocalyptic number.

It is an amenable number.

80561201 is a deficient number, since it is larger than the sum of its proper divisors (12212623).

80561201 is a wasteful number, since it uses less digits than its factorization.

80561201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87991.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 80561201 is about 8975.5891728621. The cubic root of 80561201 is about 431.8921502178.

Adding to 80561201 its reverse (10216508), we get a palindrome (90777709).

The spelling of 80561201 in words is "eighty million, five hundred sixty-one thousand, two hundred one".

Divisors: 1 7 131 917 87853 614971 11508743 80561201