1123577545 has 4 divisors (see below), whose sum is σ = 1348293060. Its totient is φ = 898862032.

The previous prime is 1123577527. The next prime is 1123577551. The reversal of 1123577545 is 5457753211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 775232649 + 348344896 = 27843^2 + 18664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123577545 - 2⁷ = 1123577417 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1123577498 and 1123577507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112357750 + ... + 112357759.

It is an arithmetic number, because the mean of its divisors is an integer number (337073265).

Almost surely, 2^1123577545 is an apocalyptic number.

It is an amenable number.

1123577545 is a deficient number, since it is larger than the sum of its proper divisors (224715515).

1123577545 is an equidigital number, since it uses as much as digits as its factorization.

1123577545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224715514.

The product of its digits is 147000, while the sum is 40.

The square root of 1123577545 is about 33519.8082482582. The cubic root of 1123577545 is about 1039.6033821094.

The spelling of 1123577545 in words is "one billion, one hundred twenty-three million, five hundred seventy-seven thousand, five hundred forty-five".