1155254512 has 40 divisors (see below), whose sum is σ = 2298018096. Its totient is φ = 562308096.

The previous prime is 1155254491. The next prime is 1155254519. The reversal of 1155254512 is 2154525511.

It is a super-2 number, since 2×1155254512² = 2669225974992716288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155254519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215448 + ... + 220744.

Almost surely, 2^1155254512 is an apocalyptic number.

It is an amenable number.

1155254512 is a deficient number, since it is larger than the sum of its proper divisors (1142763584).

1155254512 is a wasteful number, since it uses less digits than its factorization.

1155254512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665 (or 5659 counting only the distinct ones).

The product of its digits is 10000, while the sum is 31.

The square root of 1155254512 is about 33989.0351731261. The cubic root of 1155254512 is about 1049.2828094112.

The spelling of 1155254512 in words is "one billion, one hundred fifty-five million, two hundred fifty-four thousand, five hundred twelve".