112009554 has 60 divisors (see below), whose sum is σ = 257257374. Its totient is φ = 36425376.

The previous prime is 112009543. The next prime is 112009559. The reversal of 112009554 is 455900211.

It can be written as a sum of positive squares in only one way, i.e., 111830625 + 178929 = 10575^2 + 423^2 .

It is a super-2 number, since 2×112009554² = 25092280374557832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (112009559) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 357702 + ... + 358014.

Almost surely, 2^112009554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 112009554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128628687).

112009554 is an abundant number, since it is smaller than the sum of its proper divisors (145247820).

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

112009554 is an equidigital number, since it uses as much as digits as its factorization.

112009554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 112009554 is about 10583.4566187045. The cubic root of 112009554 is about 482.0421586949.

Adding to 112009554 its reverse (455900211), we get a palindrome (567909765).

The spelling of 112009554 in words is "one hundred twelve million, nine thousand, five hundred fifty-four".