111145450 has 48 divisors (see below), whose sum is σ = 224969976.
Its totient is φ = 40608000.
The previous prime is 111145381. The next prime is 111145457. The reversal of 111145450 is 54541111.
Adding to 111145450 its reverse (54541111), we get a palindrome (165686561).
It is a happy number.
It can be written as a sum of positive squares in 12 ways, for example, as 8994001 + 102151449 = 2999^2 + 10107^2
It is a super-2 number, since 2×1111454502 = 24706622111405000, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (111145457) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64804 + ... + 66496.
Almost surely, 2111145450 is an apocalyptic number.
111145450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
111145450 is an abundant number, since it is smaller than the sum of its proper divisors (113824526).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
111145450 is a wasteful number, since it uses less digits than its factorization.
111145450 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1819 (or 1814 counting only the distinct ones).
The product of its (nonzero) digits is 400, while the sum is 22.
The square root of 111145450 is about 10542.5542445842.
The cubic root of 111145450 is about 480.7993769158.
The spelling of 111145450 in words is "one hundred eleven million, one hundred forty-five thousand, four hundred fifty".