54909251 has 2 divisors, whose sum is σ = 54909252. Its totient is φ = 54909250.

The previous prime is 54909241. The next prime is 54909271. The reversal of 54909251 is 15290945.

54909251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54909251 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (54909241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27454625 + 27454626.

It is an arithmetic number, because the mean of its divisors is an integer number (27454626).

Almost surely, 2^54909251 is an apocalyptic number.

54909251 is a deficient number, since it is larger than the sum of its proper divisors (1).

54909251 is an equidigital number, since it uses as much as digits as its factorization.

54909251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 54909251 is about 7410.0776649101. The cubic root of 54909251 is about 380.0859708533.

It can be divided in two parts, 5490 and 9251, that added together give a palindrome (14741).

The spelling of 54909251 in words is "fifty-four million, nine hundred nine thousand, two hundred fifty-one".