105545550 has 96 divisors (see below), whose sum is σ = 291838464. Its totient is φ = 25024000.

The previous prime is 105545543. The next prime is 105545563. The reversal of 105545550 is 55545501.

It is a super-2 number, since 2×105545550² = 22279726249605000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76870 + ... + 78230.

It is an arithmetic number, because the mean of its divisors is an integer number (3039984).

Almost surely, 2^105545550 is an apocalyptic number.

105545550 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 105545550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145919232).

105545550 is an abundant number, since it is smaller than the sum of its proper divisors (186292914).

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

105545550 is a wasteful number, since it uses less digits than its factorization.

105545550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1429 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 105545550 is about 10273.5363921096. The cubic root of 105545550 is about 472.5850466996.

The spelling of 105545550 in words is "one hundred five million, five hundred forty-five thousand, five hundred fifty".