105780550 has 24 divisors (see below), whose sum is σ = 200942496. Its totient is φ = 41411040.

The previous prime is 105780547. The next prime is 105780551. The reversal of 105780550 is 55087501.

It is a super-2 number, since 2×105780550² = 22379049516605000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105780551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20157 + ... + 24856.

It is an arithmetic number, because the mean of its divisors is an integer number (8372604).

Almost surely, 2^105780550 is an apocalyptic number.

105780550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105780550 is a deficient number, since it is larger than the sum of its proper divisors (95161946).

105780550 is a wasteful number, since it uses less digits than its factorization.

105780550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45072 (or 45067 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 105780550 is about 10284.9671851688. The cubic root of 105780550 is about 472.9355278067.

The spelling of 105780550 in words is "one hundred five million, seven hundred eighty thousand, five hundred fifty".