55010109 has 24 divisors (see below), whose sum is σ = 92142400. Its totient is φ = 28575360.

The previous prime is 55010107. The next prime is 55010117. The reversal of 55010109 is 90101055.

It is a happy number.

It is not a de Polignac number, because 55010109 - 2¹ = 55010107 is a prime.

It is a super-2 number, since 2×55010109² = 6052224184383762, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55010107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8284 + ... + 13365.

Almost surely, 2^55010109 is an apocalyptic number.

It is an amenable number.

55010109 is a deficient number, since it is larger than the sum of its proper divisors (37132291).

55010109 is a wasteful number, since it uses less digits than its factorization.

55010109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21681 (or 21670 counting only the distinct ones).

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

The square root of 55010109 is about 7416.8800044223. The cubic root of 55010109 is about 380.3185440709.

The spelling of 55010109 in words is "fifty-five million, ten thousand, one hundred nine".