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100481 = 891129
BaseRepresentation
bin11000100010000001
312002211112
4120202001
511203411
62053105
7565643
oct304201
9162745
10100481
1169547
124a195
1336974
1428893
151eb8b
hex18881

100481 has 4 divisors (see below), whose sum is σ = 101700. Its totient is φ = 99264.

The previous prime is 100469. The next prime is 100483. The reversal of 100481 is 184001.

It is a happy number.

100481 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184001 = 374973.

It can be written as a sum of positive squares in 2 ways, for example, as 13456 + 87025 = 116^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 100481 - 26 = 100417 is a prime.

It is a super-2 number, since 2×1004812 = 20192862722, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 100481.

It is not an unprimeable number, because it can be changed into a prime (100483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476 + ... + 653.

It is an arithmetic number, because the mean of its divisors is an integer number (25425).

2100481 is an apocalyptic number.

It is an amenable number.

100481 is a deficient number, since it is larger than the sum of its proper divisors (1219).

100481 is an equidigital number, since it uses as much as digits as its factorization.

100481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218.

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

The square root of 100481 is about 316.9873814523. The cubic root of 100481 is about 46.4901894746.

Adding to 100481 its reverse (184001), we get a palindrome (284482).

The spelling of 100481 in words is "one hundred thousand, four hundred eighty-one".

Divisors: 1 89 1129 100481