105111450 has 144 divisors (see below), whose sum is σ = 297704160. Its totient is φ = 26559360.

The previous prime is 105111443. The next prime is 105111463. The reversal of 105111450 is 54111501.

It is a happy number.

105111450 is a `hidden beast` number, since 10 + 511 + 145 + 0 = 666.

It is a super-2 number, since 2×105111450² = 22096833842205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 982297 + ... + 982403.

It is an arithmetic number, because the mean of its divisors is an integer number (2067390).

Almost surely, 2^105111450 is an apocalyptic number.

105111450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 105111450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148852080).

105111450 is an abundant number, since it is smaller than the sum of its proper divisors (192592710).

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

105111450 is a wasteful number, since it uses less digits than its factorization.

105111450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 105111450 is about 10252.3875268154. The cubic root of 105111450 is about 471.9362555159.

Adding to 105111450 its reverse (54111501), we get a palindrome (159222951).

The spelling of 105111450 in words is "one hundred five million, one hundred eleven thousand, four hundred fifty".