104518781 has 2 divisors, whose sum is σ = 104518782. Its totient is φ = 104518780.

The previous prime is 104518751. The next prime is 104518783. The reversal of 104518781 is 187815401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93296281 + 11222500 = 9659^2 + 3350^2 .

It is a cyclic number.

It is not a de Polignac number, because 104518781 - 2¹⁸ = 104256637 is a prime.

It is a super-2 number, since 2×104518781² = 21848351163451922, which contains 22 as substring.

Together with 104518783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104518783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52259390 + 52259391.

It is an arithmetic number, because the mean of its divisors is an integer number (52259391).

Almost surely, 2^104518781 is an apocalyptic number.

It is an amenable number.

104518781 is a deficient number, since it is larger than the sum of its proper divisors (1).

104518781 is an equidigital number, since it uses as much as digits as its factorization.

104518781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 35.

The square root of 104518781 is about 10223.4427175976. The cubic root of 104518781 is about 471.0475818279.

The spelling of 104518781 in words is "one hundred four million, five hundred eighteen thousand, seven hundred eighty-one".