101640055 has 16 divisors (see below), whose sum is σ = 133668864. Its totient is φ = 73579680.

The previous prime is 101640053. The next prime is 101640083. The reversal of 101640055 is 550046101.

It is not a de Polignac number, because 101640055 - 2¹ = 101640053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101640053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8122 + ... + 16408.

It is an arithmetic number, because the mean of its divisors is an integer number (8354304).

Almost surely, 2^101640055 is an apocalyptic number.

101640055 is a deficient number, since it is larger than the sum of its proper divisors (32028809).

101640055 is a wasteful number, since it uses less digits than its factorization.

101640055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8526.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 101640055 is about 10081.6692566261. The cubic root of 101640055 is about 466.6826233206.

Adding to 101640055 its reverse (550046101), we get a palindrome (651686156).

The spelling of 101640055 in words is "one hundred one million, six hundred forty thousand, fifty-five".