105522639 has 4 divisors (see below), whose sum is σ = 140696856. Its totient is φ = 70348424.

The previous prime is 105522589. The next prime is 105522653. The reversal of 105522639 is 936225501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936225501 = 3 ⋅312075167.

It is a cyclic number.

It is not a de Polignac number, because 105522639 - 2⁷ = 105522511 is a prime.

It is a super-2 number, since 2×105522639² = 22270054683048642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105522139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17587104 + ... + 17587109.

It is an arithmetic number, because the mean of its divisors is an integer number (35174214).

Almost surely, 2^105522639 is an apocalyptic number.

105522639 is a deficient number, since it is larger than the sum of its proper divisors (35174217).

105522639 is an equidigital number, since it uses as much as digits as its factorization.

105522639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35174216.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 105522639 is about 10272.4212822489. The cubic root of 105522639 is about 472.5508492069.

The spelling of 105522639 in words is "one hundred five million, five hundred twenty-two thousand, six hundred thirty-nine".