1155254445 has 24 divisors (see below), whose sum is σ = 2004361632. Its totient is φ = 615544800.

The previous prime is 1155254423. The next prime is 1155254479. The reversal of 1155254445 is 5444525511.

1155254445 is a `hidden beast` number, since 11 + 552 + 54 + 4 + 45 = 666.

1155254445 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1155254445 - 2⁶ = 1155254381 is a prime.

It is a super-2 number, since 2×1155254445² = 2669225665384516050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37330 + ... + 60860.

It is an arithmetic number, because the mean of its divisors is an integer number (83515068).

Almost surely, 2^1155254445 is an apocalyptic number.

1155254445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155254445 is a deficient number, since it is larger than the sum of its proper divisors (849107187).

1155254445 is a wasteful number, since it uses less digits than its factorization.

1155254445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24633 (or 24630 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The square root of 1155254445 is about 33989.0341875141. The cubic root of 1155254445 is about 1049.2827891265.

Adding to 1155254445 its reverse (5444525511), we get a palindrome (6599779956).

The spelling of 1155254445 in words is "one billion, one hundred fifty-five million, two hundred fifty-four thousand, four hundred forty-five".