54221805 has 48 divisors (see below), whose sum is σ = 106352064. Its totient is φ = 26282880.

The previous prime is 54221771. The next prime is 54221813. The reversal of 54221805 is 50812245.

It is a happy number.

It is not a de Polignac number, because 54221805 - 2¹³ = 54213613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11337 + ... + 15393.

It is an arithmetic number, because the mean of its divisors is an integer number (2215668).

Almost surely, 2^54221805 is an apocalyptic number.

54221805 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54221805 is a deficient number, since it is larger than the sum of its proper divisors (52130259).

54221805 is a wasteful number, since it uses less digits than its factorization.

54221805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088 (or 4076 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 54221805 is about 7363.5456812598. The cubic root of 54221805 is about 378.4931205912.

It can be divided in two parts, 5422 and 1805, that added together give a palindrome (7227).

The spelling of 54221805 in words is "fifty-four million, two hundred twenty-one thousand, eight hundred five".