1123455558 has 8 divisors (see below), whose sum is σ = 2246911128. Its totient is φ = 374485184.

The previous prime is 1123455551. The next prime is 1123455559. The reversal of 1123455558 is 8555543211.

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

1123455558 is an admirable number.

It is a super-3 number, since 3×1123455558³ (a number of 28 digits) contains 333 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123455551) 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, 93621291 + ... + 93621302.

It is an arithmetic number, because the mean of its divisors is an integer number (280863891).

Almost surely, 2^1123455558 is an apocalyptic number.

1123455558 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123455558 is a wasteful number, since it uses less digits than its factorization.

1123455558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187242598.

The product of its digits is 120000, while the sum is 39.

The square root of 1123455558 is about 33517.9885733019. The cubic root of 1123455558 is about 1039.5657574439.

Adding to 1123455558 its reverse (8555543211), we get a palindrome (9678998769).

The spelling of 1123455558 in words is "one billion, one hundred twenty-three million, four hundred fifty-five thousand, five hundred fifty-eight".