1135555801 has 2 divisors, whose sum is σ = 1135555802. Its totient is φ = 1135555800.

The previous prime is 1135555777. The next prime is 1135555819. The reversal of 1135555801 is 1085555311.

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., 1111555600 + 24000201 = 33340^2 + 4899^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135555801 - 2⁵ = 1135555769 is a prime.

It is not a weakly prime, because it can be changed into another prime (1135555601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567777900 + 567777901.

It is an arithmetic number, because the mean of its divisors is an integer number (567777901).

Almost surely, 2^1135555801 is an apocalyptic number.

It is an amenable number.

1135555801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135555801 is an equidigital number, since it uses as much as digits as its factorization.

1135555801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 34.

The square root of 1135555801 is about 33698.0088580913. The cubic root of 1135555801 is about 1043.2846719868.

It can be divided in two parts, 1135555 and 801, that added together give a square (1136356 = 1066²).

The spelling of 1135555801 in words is "one billion, one hundred thirty-five million, five hundred fifty-five thousand, eight hundred one".