1155565602 has 56 divisors (see below), whose sum is σ = 2610936540. Its totient is φ = 383395680.

The previous prime is 1155565601. The next prime is 1155565613. The reversal of 1155565602 is 2065655511.

It can be written as a sum of positive squares in 2 ways, for example, as 1144536561 + 11029041 = 33831^2 + 3321^2 .

It is not an unprimeable number, because it can be changed into a prime (1155565601) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 332152 + ... + 335612.

Almost surely, 2^1155565602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155565602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1305468270).

1155565602 is an abundant number, since it is smaller than the sum of its proper divisors (1455370938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155565602 is an equidigital number, since it uses as much as digits as its factorization.

1155565602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3695 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 1155565602 is about 33993.6111938699. The cubic root of 1155565602 is about 1049.3769855113.

The spelling of 1155565602 in words is "one billion, one hundred fifty-five million, five hundred sixty-five thousand, six hundred two".