1123550405 has 8 divisors (see below), whose sum is σ = 1349314200. Its totient is φ = 898137856.

The previous prime is 1123550401. The next prime is 1123550411. The reversal of 1123550405 is 5040553211.

It can be written as a sum of positive squares in 4 ways, for example, as 217179169 + 906371236 = 14737^2 + 30106^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123550405 - 2² = 1123550401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123550401) 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, 80720 + ... + 93609.

It is an arithmetic number, because the mean of its divisors is an integer number (168664275).

Almost surely, 2^1123550405 is an apocalyptic number.

It is an amenable number.

1123550405 is a deficient number, since it is larger than the sum of its proper divisors (225763795).

1123550405 is a wasteful number, since it uses less digits than its factorization.

1123550405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175623.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1123550405 is about 33519.4034105621. The cubic root of 1123550405 is about 1039.5950115069.

The spelling of 1123550405 in words is "one billion, one hundred twenty-three million, five hundred fifty thousand, four hundred five".