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BaseRepresentation
bin10111001001
32000212
4113021
521411
610505
74214
oct2711
92025
101481
111127
12a35
1389c
1477b
1568b
hex5c9

1481 has 2 divisors, whose sum is σ = 1482. Its totient is φ = 1480.

The previous prime is 1471. The next prime is 1483. The reversal of 1481 is 1841.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1225 + 256 = 35^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 1481 - 210 = 457 is a prime.

It is a super-2 number, since 2×14812 = 4386722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1483, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 11, base 13, base 14 and base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 1481.

It is not a weakly prime, because it can be changed into another prime (1483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 740 + 741.

It is an arithmetic number, because the mean of its divisors is an integer number (741).

It is an amenable number.

1481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1481 is an equidigital number, since it uses as much as digits as its factorization.

1481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32, while the sum is 14.

The square root of 1481 is about 38.4837628098. The cubic root of 1481 is about 11.3986045281.

The spelling of 1481 in words is "one thousand, four hundred eighty-one".