1415705261 has 2 divisors, whose sum is σ = 1415705262. Its totient is φ = 1415705260.

The previous prime is 1415705227. The next prime is 1415705287. The reversal of 1415705261 is 1625075141.

1415705261 = 26605² + 26606².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 707879236 + 707826025 = 26606^2 + 26605^2 .

It is an emirp because it is prime and its reverse (1625075141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1415705261 - 2⁶ = 1415705197 is a prime.

It is a Sophie Germain 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 (1415707261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 707852630 + 707852631.

It is an arithmetic number, because the mean of its divisors is an integer number (707852631).

Almost surely, 2^1415705261 is an apocalyptic number.

1415705261 is the 26606-th centered square number.

It is an amenable number.

1415705261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1415705261 is an equidigital number, since it uses as much as digits as its factorization.

1415705261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1415705261 is about 37625.8589403617. The cubic root of 1415705261 is about 1122.8565636265.

The spelling of 1415705261 in words is "one billion, four hundred fifteen million, seven hundred five thousand, two hundred sixty-one".