100520055 has 32 divisors (see below), whose sum is σ = 180875520. Its totient is φ = 52958880.

The previous prime is 100520039. The next prime is 100520081. The reversal of 100520055 is 550025001.

It is not a de Polignac number, because 100520055 - 2⁴ = 100520039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6720 + ... + 15690.

It is an arithmetic number, because the mean of its divisors is an integer number (5652360).

Almost surely, 2^100520055 is an apocalyptic number.

100520055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100520055 is a deficient number, since it is larger than the sum of its proper divisors (80355465).

100520055 is an equidigital number, since it uses as much as digits as its factorization.

100520055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9068 (or 9062 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 100520055 is about 10025.9690304728. The cubic root of 100520055 is about 464.9621197030.

Adding to 100520055 its reverse (550025001), we get a palindrome (650545056).

The spelling of 100520055 in words is "one hundred million, five hundred twenty thousand, fifty-five".