1133885521 has 2 divisors, whose sum is σ = 1133885522. Its totient is φ = 1133885520.

The previous prime is 1133885503. The next prime is 1133885531. The reversal of 1133885521 is 1255883311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 983700496 + 150185025 = 31364^2 + 12255^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133885521 - 2⁷ = 1133885393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1133885531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566942760 + 566942761.

It is an arithmetic number, because the mean of its divisors is an integer number (566942761).

Almost surely, 2^1133885521 is an apocalyptic number.

It is an amenable number.

1133885521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133885521 is an equidigital number, since it uses as much as digits as its factorization.

1133885521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 37.

The square root of 1133885521 is about 33673.2166714141. The cubic root of 1133885521 is about 1042.7729012750.

The spelling of 1133885521 in words is "one billion, one hundred thirty-three million, eight hundred eighty-five thousand, five hundred twenty-one".