1155777222 has 16 divisors (see below), whose sum is σ = 2318417712. Its totient is φ = 384115200.

The previous prime is 1155777211. The next prime is 1155777253. The reversal of 1155777222 is 2227775511.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283779 + ... + 287822.

It is an arithmetic number, because the mean of its divisors is an integer number (144901107).

Almost surely, 2^1155777222 is an apocalyptic number.

1155777222 is an abundant number, since it is smaller than the sum of its proper divisors (1162640490).

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

1155777222 is a wasteful number, since it uses less digits than its factorization.

1155777222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571943.

The product of its digits is 68600, while the sum is 39.

The square root of 1155777222 is about 33996.7236950857. The cubic root of 1155777222 is about 1049.4410394553.

The spelling of 1155777222 in words is "one billion, one hundred fifty-five million, seven hundred seventy-seven thousand, two hundred twenty-two".