1135355521 has 2 divisors, whose sum is σ = 1135355522. Its totient is φ = 1135355520.

The previous prime is 1135355513. The next prime is 1135355537. The reversal of 1135355521 is 1255535311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 843321600 + 292033921 = 29040^2 + 17089^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135355521 - 2³ = 1135355513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1135355021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567677760 + 567677761.

It is an arithmetic number, because the mean of its divisors is an integer number (567677761).

Almost surely, 2^1135355521 is an apocalyptic number.

It is an amenable number.

1135355521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135355521 is an equidigital number, since it uses as much as digits as its factorization.

1135355521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11250, while the sum is 31.

The square root of 1135355521 is about 33695.0370381159. The cubic root of 1135355521 is about 1043.2233330550.

The spelling of 1135355521 in words is "one billion, one hundred thirty-five million, three hundred fifty-five thousand, five hundred twenty-one".