1153551123 has 12 divisors (see below), whose sum is σ = 1753937640. Its totient is φ = 728558496.

The previous prime is 1153551101. The next prime is 1153551149. The reversal of 1153551123 is 3211553511.

1153551123 is a `hidden beast` number, since 1 + 1 + 535 + 5 + 1 + 123 = 666.

It is not a de Polignac number, because 1153551123 - 2⁶ = 1153551059 is a prime.

It is a super-2 number, since 2×1153551123² = 2661360386749122258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1153551193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3372786 + ... + 3373127.

It is an arithmetic number, because the mean of its divisors is an integer number (146161470).

Almost surely, 2^1153551123 is an apocalyptic number.

1153551123 is a deficient number, since it is larger than the sum of its proper divisors (600386517).

1153551123 is a wasteful number, since it uses less digits than its factorization.

1153551123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6745938 (or 6745935 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 1153551123 is about 33963.9680102311. The cubic root of 1153551123 is about 1048.7668434615.

The spelling of 1153551123 in words is "one billion, one hundred fifty-three million, five hundred fifty-one thousand, one hundred twenty-three".