105520440 has 64 divisors (see below), whose sum is σ = 317260800. Its totient is φ = 28076672.

The previous prime is 105520421. The next prime is 105520451. The reversal of 105520440 is 44025501.

It is a super-2 number, since 2×105520440² = 22269126515587200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85669 + ... + 86891.

It is an arithmetic number, because the mean of its divisors is an integer number (4957200).

Almost surely, 2^105520440 is an apocalyptic number.

105520440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105520440 is an abundant number, since it is smaller than the sum of its proper divisors (211740360).

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

105520440 is a wasteful number, since it uses less digits than its factorization.

105520440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956 (or 1952 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 105520440 is about 10272.3142475296. The cubic root of 105520440 is about 472.5475666679.

Adding to 105520440 its reverse (44025501), we get a palindrome (149545941).

The spelling of 105520440 in words is "one hundred five million, five hundred twenty thousand, four hundred forty".