54507251 has 2 divisors, whose sum is σ = 54507252. Its totient is φ = 54507250.

The previous prime is 54507239. The next prime is 54507259. The reversal of 54507251 is 15270545.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54507251 is a prime.

It is not a weakly prime, because it can be changed into another prime (54507259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27253625 + 27253626.

It is an arithmetic number, because the mean of its divisors is an integer number (27253626).

Almost surely, 2^54507251 is an apocalyptic number.

54507251 is a deficient number, since it is larger than the sum of its proper divisors (1).

54507251 is an equidigital number, since it uses as much as digits as its factorization.

54507251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 54507251 is about 7382.9026134712. The cubic root of 54507251 is about 379.1561399055.

Adding to 54507251 its reverse (15270545), we get a palindrome (69777796).

The spelling of 54507251 in words is "fifty-four million, five hundred seven thousand, two hundred fifty-one".