105550609531 has 2 divisors, whose sum is σ = 105550609532. Its totient is φ = 105550609530.

The previous prime is 105550609529. The next prime is 105550609543. The reversal of 105550609531 is 135906055501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105550609531 - 2¹ = 105550609529 is a prime.

It is a super-2 number, since 2×105550609531² (a number of 23 digits) contains 22 as substring.

Together with 105550609529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (105550609631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52775304765 + 52775304766.

It is an arithmetic number, because the mean of its divisors is an integer number (52775304766).

Almost surely, 2^105550609531 is an apocalyptic number.

105550609531 is a deficient number, since it is larger than the sum of its proper divisors (1).

105550609531 is an equidigital number, since it uses as much as digits as its factorization.

105550609531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 101250, while the sum is 40.

The spelling of 105550609531 in words is "one hundred five billion, five hundred fifty million, six hundred nine thousand, five hundred thirty-one".