100055109 has 48 divisors (see below), whose sum is σ = 173352960. Its totient is φ = 50732640.

The previous prime is 100055101. The next prime is 100055147. The reversal of 100055109 is 901550001.

It is a happy number.

It is not a de Polignac number, because 100055109 - 2³ = 100055101 is a prime.

It is a super-2 number, since 2×100055109² = 20022049674003762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100055101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68812 + ... + 70250.

It is an arithmetic number, because the mean of its divisors is an integer number (3611520).

Almost surely, 2^100055109 is an apocalyptic number.

It is an amenable number.

100055109 is a deficient number, since it is larger than the sum of its proper divisors (73297851).

100055109 is a wasteful number, since it uses less digits than its factorization.

100055109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 100055109 is about 10002.7550704793. The cubic root of 100055109 is about 464.2441321430.

The spelling of 100055109 in words is "one hundred million, fifty-five thousand, one hundred nine".