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80488381 is a prime number
BaseRepresentation
bin1001100110000…
…10011110111101
312121110020022011
410303002132331
5131101112011
611553051221
71665066001
oct463023675
9177406264
1080488381
1141485126
1222b56b11
13138a177c
14a992701
1570ed621
hex4cc27bd

80488381 has 2 divisors, whose sum is σ = 80488382. Its totient is φ = 80488380.

The previous prime is 80488361. The next prime is 80488399. The reversal of 80488381 is 18388408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80389156 + 99225 = 8966^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 80488381 - 217 = 80357309 is a prime.

It is a super-2 number, since 2×804883812 = 12956758952002322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80488301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40244190 + 40244191.

It is an arithmetic number, because the mean of its divisors is an integer number (40244191).

Almost surely, 280488381 is an apocalyptic number.

It is an amenable number.

80488381 is a deficient number, since it is larger than the sum of its proper divisors (1).

80488381 is an equidigital number, since it uses as much as digits as its factorization.

80488381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 80488381 is about 8971.5316975420. The cubic root of 80488381 is about 431.7619805793.

The spelling of 80488381 in words is "eighty million, four hundred eighty-eight thousand, three hundred eighty-one".