111994550 has 24 divisors (see below), whose sum is σ = 219275400. Its totient is φ = 42439680.

The previous prime is 111994543. The next prime is 111994577. The reversal of 111994550 is 55499111.

It is a self number, because there is not a number n which added to its sum of digits gives 111994550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57995 + ... + 59894.

It is an arithmetic number, because the mean of its divisors is an integer number (9136475).

Almost surely, 2^111994550 is an apocalyptic number.

111994550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111994550 is a deficient number, since it is larger than the sum of its proper divisors (107280850).

111994550 is a wasteful number, since it uses less digits than its factorization.

111994550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117920 (or 117915 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 35.

The square root of 111994550 is about 10582.7477528287. The cubic root of 111994550 is about 482.0206340919.

The spelling of 111994550 in words is "one hundred eleven million, nine hundred ninety-four thousand, five hundred fifty".