1153880521 has 2 divisors, whose sum is σ = 1153880522. Its totient is φ = 1153880520.

The previous prime is 1153880501. The next prime is 1153880531. The reversal of 1153880521 is 1250883511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1009015225 + 144865296 = 31765^2 + 12036^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153880521 - 2⁹ = 1153880009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1153880501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576940260 + 576940261.

It is an arithmetic number, because the mean of its divisors is an integer number (576940261).

Almost surely, 2^1153880521 is an apocalyptic number.

It is an amenable number.

1153880521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153880521 is an equidigital number, since it uses as much as digits as its factorization.

1153880521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 1153880521 is about 33968.8168913785. The cubic root of 1153880521 is about 1048.8666595328.

The spelling of 1153880521 in words is "one billion, one hundred fifty-three million, eight hundred eighty thousand, five hundred twenty-one".