113145554 has 4 divisors (see below), whose sum is σ = 169718334. Its totient is φ = 56572776.

The previous prime is 113145541. The next prime is 113145563. The reversal of 113145554 is 455541311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455541311 = 31 ⋅14694881.

It can be written as a sum of positive squares in only one way, i.e., 111788329 + 1357225 = 10573^2 + 1165^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28286387 + ... + 28286390.

Almost surely, 2^113145554 is an apocalyptic number.

113145554 is a deficient number, since it is larger than the sum of its proper divisors (56572780).

113145554 is an equidigital number, since it uses as much as digits as its factorization.

113145554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56572779.

The product of its digits is 6000, while the sum is 29.

The square root of 113145554 is about 10636.9898937622. The cubic root of 113145554 is about 483.6663028930. Note that the first 3 decimals are identical.

Adding to 113145554 its reverse (455541311), we get a palindrome (568686865).

The spelling of 113145554 in words is "one hundred thirteen million, one hundred forty-five thousand, five hundred fifty-four".