915151261 has 2 divisors, whose sum is σ = 915151262. Its totient is φ = 915151260.

The previous prime is 915151243. The next prime is 915151267. The reversal of 915151261 is 162151519.

915151261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 825470361 + 89680900 = 28731^2 + 9470^2 .

It is an emirp because it is prime and its reverse (162151519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 915151261 - 2²³ = 906762653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (915151267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457575630 + 457575631.

It is an arithmetic number, because the mean of its divisors is an integer number (457575631).

Almost surely, 2^915151261 is an apocalyptic number.

It is an amenable number.

915151261 is a deficient number, since it is larger than the sum of its proper divisors (1).

915151261 is an equidigital number, since it uses as much as digits as its factorization.

915151261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 31.

The square root of 915151261 is about 30251.4670883909. The cubic root of 915151261 is about 970.8771818583.

The spelling of 915151261 in words is "nine hundred fifteen million, one hundred fifty-one thousand, two hundred sixty-one".