1151555552 has 24 divisors (see below), whose sum is σ = 2591000496. Its totient is φ = 493523712.

The previous prime is 1151555549. The next prime is 1151555567. The reversal of 1151555552 is 2555551511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2570213 + ... + 2570660.

It is an arithmetic number, because the mean of its divisors is an integer number (107958354).

Almost surely, 2^1151555552 is an apocalyptic number.

It is an amenable number.

1151555552 is an abundant number, since it is smaller than the sum of its proper divisors (1439444944).

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

1151555552 is an equidigital number, since it uses as much as digits as its factorization.

1151555552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140890 (or 5140882 counting only the distinct ones).

The product of its digits is 31250, while the sum is 35.

The square root of 1151555552 is about 33934.5775279434. The cubic root of 1151555552 is about 1048.1617274640.

The spelling of 1151555552 in words is "one billion, one hundred fifty-one million, five hundred fifty-five thousand, five hundred fifty-two".