1155254343 has 4 divisors (see below), whose sum is σ = 1540339128. Its totient is φ = 770169560.

The previous prime is 1155254323. The next prime is 1155254351. The reversal of 1155254343 is 3434525511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3434525511 = 3 ⋅1144841837.

It is a cyclic number.

It is not a de Polignac number, because 1155254343 - 2⁵ = 1155254311 is a prime.

It is a super-2 number, since 2×1155254343² = 2669225194040723298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155254323) 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, 192542388 + ... + 192542393.

It is an arithmetic number, because the mean of its divisors is an integer number (385084782).

Almost surely, 2^1155254343 is an apocalyptic number.

1155254343 is a deficient number, since it is larger than the sum of its proper divisors (385084785).

1155254343 is an equidigital number, since it uses as much as digits as its factorization.

1155254343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385084784.

The product of its digits is 36000, while the sum is 33.

The square root of 1155254343 is about 33989.0326870301. The cubic root of 1155254343 is about 1049.2827582453.

Adding to 1155254343 its reverse (3434525511), we get a palindrome (4589779854).

The spelling of 1155254343 in words is "one billion, one hundred fifty-five million, two hundred fifty-four thousand, three hundred forty-three".