54220909 has 2 divisors, whose sum is σ = 54220910. Its totient is φ = 54220908.

The previous prime is 54220897. The next prime is 54220919. The reversal of 54220909 is 90902245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30969225 + 23251684 = 5565^2 + 4822^2 .

It is a cyclic number.

It is not a de Polignac number, because 54220909 - 2¹¹ = 54218861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54220919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27110454 + 27110455.

It is an arithmetic number, because the mean of its divisors is an integer number (27110455).

Almost surely, 2^54220909 is an apocalyptic number.

It is an amenable number.

54220909 is a deficient number, since it is larger than the sum of its proper divisors (1).

54220909 is an equidigital number, since it uses as much as digits as its factorization.

54220909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 54220909 is about 7363.4848407531. The cubic root of 54220909 is about 378.4910357491.

The spelling of 54220909 in words is "fifty-four million, two hundred twenty thousand, nine hundred nine".