54905009 has 2 divisors, whose sum is σ = 54905010. Its totient is φ = 54905008.

The previous prime is 54904991. The next prime is 54905047. The reversal of 54905009 is 90050945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46512400 + 8392609 = 6820^2 + 2897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54905009 is a prime.

It is a super-3 number, since 3×54905009³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is equal to p_3276815 and since 54905009 and 3276815 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (54905069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27452504 + 27452505.

It is an arithmetic number, because the mean of its divisors is an integer number (27452505).

Almost surely, 2^54905009 is an apocalyptic number.

It is an amenable number.

54905009 is a deficient number, since it is larger than the sum of its proper divisors (1).

54905009 is an equidigital number, since it uses as much as digits as its factorization.

54905009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 54905009 is about 7409.7914275639. The cubic root of 54905009 is about 380.0761827867.

The spelling of 54905009 in words is "fifty-four million, nine hundred five thousand, nine".