105520030 has 48 divisors (see below), whose sum is σ = 241044336. Its totient is φ = 32887680.

The previous prime is 105519991. The next prime is 105520039. The reversal of 105520030 is 30025501.

It is a super-2 number, since 2×105520030² = 22268953462401800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105519986 and 105520013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105520039) 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, 4399 + ... + 15178.

It is an arithmetic number, because the mean of its divisors is an integer number (5021757).

Almost surely, 2^105520030 is an apocalyptic number.

105520030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105520030 is an abundant number, since it is smaller than the sum of its proper divisors (135524306).

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

105520030 is a wasteful number, since it uses less digits than its factorization.

105520030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19609 (or 19602 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 105520030 is about 10272.2942909556. The cubic root of 105520030 is about 472.5469546387.

Adding to 105520030 its reverse (30025501), we get a palindrome (135545531).

The spelling of 105520030 in words is "one hundred five million, five hundred twenty thousand, thirty".