1355187233 has 2 divisors, whose sum is σ = 1355187234. Its totient is φ = 1355187232.

The previous prime is 1355187187. The next prime is 1355187277. The reversal of 1355187233 is 3327815531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1237421329 + 117765904 = 35177^2 + 10852^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355187233 - 2²⁰ = 1354138657 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1355187133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677593616 + 677593617.

It is an arithmetic number, because the mean of its divisors is an integer number (677593617).

Almost surely, 2^1355187233 is an apocalyptic number.

It is an amenable number.

1355187233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355187233 is an equidigital number, since it uses as much as digits as its factorization.

1355187233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 38.

The square root of 1355187233 is about 36812.8677638676. The cubic root of 1355187233 is about 1106.6231907708.

The spelling of 1355187233 in words is "one billion, three hundred fifty-five million, one hundred eighty-seven thousand, two hundred thirty-three".