102020055 has 16 divisors (see below), whose sum is σ = 165469920. Its totient is φ = 53664768.

The previous prime is 102020053. The next prime is 102020059. The reversal of 102020055 is 550020201.

It is not a de Polignac number, because 102020055 - 2¹ = 102020053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45490 + ... + 47679.

It is an arithmetic number, because the mean of its divisors is an integer number (10341870).

Almost surely, 2^102020055 is an apocalyptic number.

102020055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102020055 is a deficient number, since it is larger than the sum of its proper divisors (63449865).

102020055 is an equidigital number, since it uses as much as digits as its factorization.

102020055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93250.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 102020055 is about 10100.4977600116. The cubic root of 102020055 is about 467.2634929048.

Adding to 102020055 its reverse (550020201), we get a palindrome (652040256).

The spelling of 102020055 in words is "one hundred two million, twenty thousand, fifty-five".