1155203351 has 4 divisors (see below), whose sum is σ = 1165999752. Its totient is φ = 1144406952.

The previous prime is 1155203341. The next prime is 1155203377. The reversal of 1155203351 is 1533025511.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155203351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155203351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155203341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5398040 + ... + 5398253.

It is an arithmetic number, because the mean of its divisors is an integer number (291499938).

Almost surely, 2^1155203351 is an apocalyptic number.

1155203351 is a deficient number, since it is larger than the sum of its proper divisors (10796401).

1155203351 is a wasteful number, since it uses less digits than its factorization.

1155203351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10796400.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 1155203351 is about 33988.2825544334. The cubic root of 1155203351 is about 1049.2673198518.

Adding to 1155203351 its reverse (1533025511), we get a palindrome (2688228862).

The spelling of 1155203351 in words is "one billion, one hundred fifty-five million, two hundred three thousand, three hundred fifty-one".