55467509 has 2 divisors, whose sum is σ = 55467510. Its totient is φ = 55467508.

The previous prime is 55467499. The next prime is 55467527. The reversal of 55467509 is 90576455.

55467509 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36300625 + 19166884 = 6025^2 + 4378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55467509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55467569) 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 as a sum of consecutive naturals, namely, 27733754 + 27733755.

It is an arithmetic number, because the mean of its divisors is an integer number (27733755).

Almost surely, 2^55467509 is an apocalyptic number.

It is an amenable number.

55467509 is a deficient number, since it is larger than the sum of its proper divisors (1).

55467509 is an equidigital number, since it uses as much as digits as its factorization.

55467509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 55467509 is about 7447.6512404919. The cubic root of 55467509 is about 381.3697313097.

The spelling of 55467509 in words is "fifty-five million, four hundred sixty-seven thousand, five hundred nine".