1155551322 has 16 divisors (see below), whose sum is σ = 2326615200. Its totient is φ = 382598352.

The previous prime is 1155551321. The next prime is 1155551333. The reversal of 1155551322 is 2231555511.

It is a self number, because there is not a number n which added to its sum of digits gives 1155551322.

It is not an unprimeable number, because it can be changed into a prime (1155551321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645388 + ... + 647175.

It is an arithmetic number, because the mean of its divisors is an integer number (145413450).

Almost surely, 2^1155551322 is an apocalyptic number.

1155551322 is an abundant number, since it is smaller than the sum of its proper divisors (1171063878).

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

1155551322 is a wasteful number, since it uses less digits than its factorization.

1155551322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292717.

The product of its digits is 7500, while the sum is 30.

The square root of 1155551322 is about 33993.4011537534. The cubic root of 1155551322 is about 1049.3726629051.

The spelling of 1155551322 in words is "one billion, one hundred fifty-five million, five hundred fifty-one thousand, three hundred twenty-two".