1123565055 has 16 divisors (see below), whose sum is σ = 1798157664. Its totient is φ = 599083520.

The previous prime is 1123565041. The next prime is 1123565099. The reversal of 1123565055 is 5505653211.

It is not a de Polignac number, because 1123565055 - 2¹² = 1123560959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78235 + ... + 91475.

It is an arithmetic number, because the mean of its divisors is an integer number (112384854).

Almost surely, 2^1123565055 is an apocalyptic number.

1123565055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1123565055 is a deficient number, since it is larger than the sum of its proper divisors (674592609).

1123565055 is a wasteful number, since it uses less digits than its factorization.

1123565055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18906.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 1123565055 is about 33519.6219399921. The cubic root of 1123565055 is about 1039.5995299218.

The spelling of 1123565055 in words is "one billion, one hundred twenty-three million, five hundred sixty-five thousand, fifty-five".