54243551 has 2 divisors, whose sum is σ = 54243552. Its totient is φ = 54243550.

The previous prime is 54243547. The next prime is 54243559. The reversal of 54243551 is 15534245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54243551 - 2² = 54243547 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54243559) 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, 27121775 + 27121776.

It is an arithmetic number, because the mean of its divisors is an integer number (27121776).

Almost surely, 2^54243551 is an apocalyptic number.

54243551 is a deficient number, since it is larger than the sum of its proper divisors (1).

54243551 is an equidigital number, since it uses as much as digits as its factorization.

54243551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 29.

The square root of 54243551 is about 7365.0221316708. The cubic root of 54243551 is about 378.5437128534.

Adding to 54243551 its reverse (15534245), we get a palindrome (69777796).

The spelling of 54243551 in words is "fifty-four million, two hundred forty-three thousand, five hundred fifty-one".