54509551 has 2 divisors, whose sum is σ = 54509552. Its totient is φ = 54509550.

The previous prime is 54509549. The next prime is 54509579. The reversal of 54509551 is 15590545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54509551 - 2¹ = 54509549 is a prime.

Together with 54509549, it forms a pair of twin primes.

It is equal to p_3254668 and since 54509551 and 3254668 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54509591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27254775 + 27254776.

It is an arithmetic number, because the mean of its divisors is an integer number (27254776).

Almost surely, 2^54509551 is an apocalyptic number.

54509551 is a deficient number, since it is larger than the sum of its proper divisors (1).

54509551 is an equidigital number, since it uses as much as digits as its factorization.

54509551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 54509551 is about 7383.0583771226. The cubic root of 54509551 is about 379.1614728159.

The spelling of 54509551 in words is "fifty-four million, five hundred nine thousand, five hundred fifty-one".