260457121 has 2 divisors, whose sum is σ = 260457122. Its totient is φ = 260457120.

The previous prime is 260457101. The next prime is 260457137. The reversal of 260457121 is 121754062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183982096 + 76475025 = 13564^2 + 8745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260457121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 260457121.

It is not a weakly prime, because it can be changed into another prime (260457101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130228560 + 130228561.

It is an arithmetic number, because the mean of its divisors is an integer number (130228561).

Almost surely, 2^260457121 is an apocalyptic number.

It is an amenable number.

260457121 is a deficient number, since it is larger than the sum of its proper divisors (1).

260457121 is an equidigital number, since it uses as much as digits as its factorization.

260457121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 260457121 is about 16138.6839921971. The cubic root of 260457121 is about 638.6242591889.

The spelling of 260457121 in words is "two hundred sixty million, four hundred fifty-seven thousand, one hundred twenty-one".