905500055 has 4 divisors (see below), whose sum is σ = 1086600072. Its totient is φ = 724400040.

The previous prime is 905500051. The next prime is 905500067. The reversal of 905500055 is 550005509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550005509 = 23 ⋅23913283.

It is not a de Polignac number, because 905500055 - 2² = 905500051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905500051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90550001 + ... + 90550010.

It is an arithmetic number, because the mean of its divisors is an integer number (271650018).

Almost surely, 2^905500055 is an apocalyptic number.

905500055 is a deficient number, since it is larger than the sum of its proper divisors (181100017).

905500055 is a wasteful number, since it uses less digits than its factorization.

905500055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181100016.

The product of its (nonzero) digits is 5625, while the sum is 29.

The square root of 905500055 is about 30091.5279605407. The cubic root of 905500055 is about 967.4521490577.

The spelling of 905500055 in words is "nine hundred five million, five hundred thousand, fifty-five".