104315261 has 2 divisors, whose sum is σ = 104315262. Its totient is φ = 104315260.

The previous prime is 104315227. The next prime is 104315287. The reversal of 104315261 is 162513401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103327225 + 988036 = 10165^2 + 994^2 .

It is an emirp because it is prime and its reverse (162513401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104315261 - 2²⁶ = 37206397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104315221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52157630 + 52157631.

It is an arithmetic number, because the mean of its divisors is an integer number (52157631).

Almost surely, 2^104315261 is an apocalyptic number.

It is an amenable number.

104315261 is a deficient number, since it is larger than the sum of its proper divisors (1).

104315261 is an equidigital number, since it uses as much as digits as its factorization.

104315261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 104315261 is about 10213.4842732537. The cubic root of 104315261 is about 470.7416403338.

Adding to 104315261 its reverse (162513401), we get a palindrome (266828662).

The spelling of 104315261 in words is "one hundred four million, three hundred fifteen thousand, two hundred sixty-one".