1355516065 has 4 divisors (see below), whose sum is σ = 1626619284. Its totient is φ = 1084412848.

The previous prime is 1355516039. The next prime is 1355516101. The reversal of 1355516065 is 5606155531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 215238241 + 1140277824 = 14671^2 + 33768^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355516065 - 2⁷ = 1355515937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135551602 + ... + 135551611.

It is an arithmetic number, because the mean of its divisors is an integer number (406654821).

Almost surely, 2^1355516065 is an apocalyptic number.

It is an amenable number.

1355516065 is a deficient number, since it is larger than the sum of its proper divisors (271103219).

1355516065 is an equidigital number, since it uses as much as digits as its factorization.

1355516065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271103218.

The product of its (nonzero) digits is 67500, while the sum is 37.

The square root of 1355516065 is about 36817.3337573486. Note that the first 3 decimals coincide. The cubic root of 1355516065 is about 1106.7126897664.

The spelling of 1355516065 in words is "one billion, three hundred fifty-five million, five hundred sixteen thousand, sixty-five".