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80382481 is a prime number
BaseRepresentation
bin1001100101010…
…00101000010001
312121020212000221
410302220220101
5131034214411
611550513041
71664145154
oct462505021
9177225027
1080382481
1141412603
1222b05781
13138654ca
14a965c9b
1570cc071
hex4ca8a11

80382481 has 2 divisors, whose sum is σ = 80382482. Its totient is φ = 80382480.

The previous prime is 80382479. The next prime is 80382487. The reversal of 80382481 is 18428308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40755456 + 39627025 = 6384^2 + 6295^2 .

It is a cyclic number.

It is not a de Polignac number, because 80382481 - 21 = 80382479 is a prime.

It is a super-2 number, since 2×803824812 = 12922686503430722, which contains 22 as substring.

Together with 80382479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80382487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40191240 + 40191241.

It is an arithmetic number, because the mean of its divisors is an integer number (40191241).

Almost surely, 280382481 is an apocalyptic number.

It is an amenable number.

80382481 is a deficient number, since it is larger than the sum of its proper divisors (1).

80382481 is an equidigital number, since it uses as much as digits as its factorization.

80382481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 80382481 is about 8965.6277527009. The cubic root of 80382481 is about 431.5725384885.

The spelling of 80382481 in words is "eighty million, three hundred eighty-two thousand, four hundred eighty-one".