54449509 has 2 divisors, whose sum is σ = 54449510. Its totient is φ = 54449508.

The previous prime is 54449503. The next prime is 54449513. The reversal of 54449509 is 90594445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28408900 + 26040609 = 5330^2 + 5103^2 .

It is a cyclic number.

It is not a de Polignac number, because 54449509 - 2⁵ = 54449477 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 (54449503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27224754 + 27224755.

It is an arithmetic number, because the mean of its divisors is an integer number (27224755).

Almost surely, 2^54449509 is an apocalyptic number.

It is an amenable number.

54449509 is a deficient number, since it is larger than the sum of its proper divisors (1).

54449509 is an equidigital number, since it uses as much as digits as its factorization.

54449509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 54449509 is about 7378.9910556932. The cubic root of 54449509 is about 379.0222068427.

The spelling of 54449509 in words is "fifty-four million, four hundred forty-nine thousand, five hundred nine".