54221749 has 4 divisors (see below), whose sum is σ = 54758700. Its totient is φ = 53684800.

The previous prime is 54221743. The next prime is 54221771. The reversal of 54221749 is 94712245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45131524 + 9090225 = 6718^2 + 3015^2 .

It is a cyclic number.

It is not a de Polignac number, because 54221749 - 2¹⁷ = 54090677 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 (54221743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268324 + ... + 268525.

It is an arithmetic number, because the mean of its divisors is an integer number (13689675).

Almost surely, 2^54221749 is an apocalyptic number.

It is an amenable number.

54221749 is a deficient number, since it is larger than the sum of its proper divisors (536951).

54221749 is a wasteful number, since it uses less digits than its factorization.

54221749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536950.

The product of its digits is 20160, while the sum is 34.

The square root of 54221749 is about 7363.5418787429. The cubic root of 54221749 is about 378.4929902893.

The spelling of 54221749 in words is "fifty-four million, two hundred twenty-one thousand, seven hundred forty-nine".