1155216351 has 32 divisors (see below), whose sum is σ = 1661990400. Its totient is φ = 711152640.

The previous prime is 1155216343. The next prime is 1155216383. The reversal of 1155216351 is 1536125511.

It is not a de Polignac number, because 1155216351 - 2³ = 1155216343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155216311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 630006 + ... + 631836.

It is an arithmetic number, because the mean of its divisors is an integer number (51937200).

Almost surely, 2^1155216351 is an apocalyptic number.

1155216351 is a deficient number, since it is larger than the sum of its proper divisors (506774049).

1155216351 is a wasteful number, since it uses less digits than its factorization.

1155216351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079.

The product of its digits is 4500, while the sum is 30.

The square root of 1155216351 is about 33988.4737962739. The cubic root of 1155216351 is about 1049.2712557891.

The spelling of 1155216351 in words is "one billion, one hundred fifty-five million, two hundred sixteen thousand, three hundred fifty-one".