1155001552 has 20 divisors (see below), whose sum is σ = 2249416420. Its totient is φ = 574507008.

The previous prime is 1155001541. The next prime is 1155001553. The reversal of 1155001552 is 2551005511.

It can be written as a sum of positive squares in 2 ways, for example, as 194993296 + 960008256 = 13964^2 + 30984^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155001553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183927 + ... + 190102.

It is an arithmetic number, because the mean of its divisors is an integer number (112470821).

Almost surely, 2^1155001552 is an apocalyptic number.

It is an amenable number.

1155001552 is a deficient number, since it is larger than the sum of its proper divisors (1094414868).

1155001552 is a wasteful number, since it uses less digits than its factorization.

1155001552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374230 (or 374224 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 1155001552 is about 33985.3137693328. The cubic root of 1155001552 is about 1049.2062185093.

The spelling of 1155001552 in words is "one billion, one hundred fifty-five million, one thousand, five hundred fifty-two".