20150055 has 12 divisors (see below), whose sum is σ = 34926840. Its totient is φ = 10746672.

The previous prime is 20150033. The next prime is 20150059. The reversal of 20150055 is 55005102.

It is not a de Polignac number, because 20150055 - 2⁸ = 20149799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20150059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223845 + ... + 223934.

It is an arithmetic number, because the mean of its divisors is an integer number (2910570).

Almost surely, 2^20150055 is an apocalyptic number.

20150055 is a deficient number, since it is larger than the sum of its proper divisors (14776785).

20150055 is a wasteful number, since it uses less digits than its factorization.

20150055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447790 (or 447787 counting only the distinct ones).

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

The square root of 20150055 is about 4488.8812637449. The cubic root of 20150055 is about 272.1189241713.

Adding to 20150055 its reverse (55005102), we get a palindrome (75155157).

The spelling of 20150055 in words is "twenty million, one hundred fifty thousand, fifty-five".