105531540 has 48 divisors (see below), whose sum is σ = 302702400. Its totient is φ = 27454720.

The previous prime is 105531509. The next prime is 105531553. The reversal of 105531540 is 45135501.

It is a super-2 number, since 2×105531540² = 22273811869543200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105531540.

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, 18990 + ... + 23909.

It is an arithmetic number, because the mean of its divisors is an integer number (6306300).

Almost surely, 2^105531540 is an apocalyptic number.

105531540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105531540 is an abundant number, since it is smaller than the sum of its proper divisors (197170860).

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

105531540 is a wasteful number, since it uses less digits than its factorization.

105531540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42952 (or 42950 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 105531540 is about 10272.8545205313. The cubic root of 105531540 is about 472.5641356349.

The spelling of 105531540 in words is "one hundred five million, five hundred thirty-one thousand, five hundred forty".