105547990 has 8 divisors (see below), whose sum is σ = 189986400. Its totient is φ = 42219192.

The previous prime is 105547987. The next prime is 105548039. The reversal of 105547990 is 99745501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×105547990² = 22280756386080200, 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 3 ways as a sum of consecutive naturals, for example, 5277390 + ... + 5277409.

It is an arithmetic number, because the mean of its divisors is an integer number (23748300).

Almost surely, 2^105547990 is an apocalyptic number.

105547990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105547990 is a deficient number, since it is larger than the sum of its proper divisors (84438410).

105547990 is a wasteful number, since it uses less digits than its factorization.

105547990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10554806.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 105547990 is about 10273.6551431319. The cubic root of 105547990 is about 472.5886884089.

The spelling of 105547990 in words is "one hundred five million, five hundred forty-seven thousand, nine hundred ninety".