54228749 has 2 divisors, whose sum is σ = 54228750. Its totient is φ = 54228748.

The previous prime is 54228739. The next prime is 54228751. The reversal of 54228749 is 94782245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53728900 + 499849 = 7330^2 + 707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54228749 is a prime.

Together with 54228751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54228739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27114374 + 27114375.

It is an arithmetic number, because the mean of its divisors is an integer number (27114375).

Almost surely, 2^54228749 is an apocalyptic number.

It is an amenable number.

54228749 is a deficient number, since it is larger than the sum of its proper divisors (1).

54228749 is an equidigital number, since it uses as much as digits as its factorization.

54228749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 41.

The square root of 54228749 is about 7364.0171781440. The cubic root of 54228749 is about 378.5092773387.

The spelling of 54228749 in words is "fifty-four million, two hundred twenty-eight thousand, seven hundred forty-nine".