104528981 has 2 divisors, whose sum is σ = 104528982. Its totient is φ = 104528980.

The previous prime is 104528947. The next prime is 104528999. The reversal of 104528981 is 189825401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99820081 + 4708900 = 9991^2 + 2170^2 .

It is an emirp because it is prime and its reverse (189825401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104528981 - 2¹⁰ = 104527957 is a prime.

It is a super-2 number, since 2×104528981² = 21852615737796722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104528681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52264490 + 52264491.

It is an arithmetic number, because the mean of its divisors is an integer number (52264491).

Almost surely, 2^104528981 is an apocalyptic number.

It is an amenable number.

104528981 is a deficient number, since it is larger than the sum of its proper divisors (1).

104528981 is an equidigital number, since it uses as much as digits as its factorization.

104528981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 104528981 is about 10223.9415589097. The cubic root of 104528981 is about 471.0629045255.

The spelling of 104528981 in words is "one hundred four million, five hundred twenty-eight thousand, nine hundred eighty-one".