104564921 has 2 divisors, whose sum is σ = 104564922. Its totient is φ = 104564920.

The previous prime is 104564893. The next prime is 104564939. The reversal of 104564921 is 129465401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89510521 + 15054400 = 9461^2 + 3880^2 .

It is a cyclic number.

It is not a de Polignac number, because 104564921 - 2⁶ = 104564857 is a prime.

It is not a weakly prime, because it can be changed into another prime (104564221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52282460 + 52282461.

It is an arithmetic number, because the mean of its divisors is an integer number (52282461).

Almost surely, 2^104564921 is an apocalyptic number.

It is an amenable number.

104564921 is a deficient number, since it is larger than the sum of its proper divisors (1).

104564921 is an equidigital number, since it uses as much as digits as its factorization.

104564921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 104564921 is about 10225.6990470090. The cubic root of 104564921 is about 471.1168865589.

The spelling of 104564921 in words is "one hundred four million, five hundred sixty-four thousand, nine hundred twenty-one".