1153679521 has 2 divisors, whose sum is σ = 1153679522. Its totient is φ = 1153679520.

The previous prime is 1153679507. The next prime is 1153679533. The reversal of 1153679521 is 1259763511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1121915025 + 31764496 = 33495^2 + 5636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1153679521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1153679561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576839760 + 576839761.

It is an arithmetic number, because the mean of its divisors is an integer number (576839761).

Almost surely, 2^1153679521 is an apocalyptic number.

It is an amenable number.

1153679521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153679521 is an equidigital number, since it uses as much as digits as its factorization.

1153679521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 40.

The square root of 1153679521 is about 33965.8581666944. The cubic root of 1153679521 is about 1048.8057536195.

The spelling of 1153679521 in words is "one billion, one hundred fifty-three million, six hundred seventy-nine thousand, five hundred twenty-one".