54413521 has 2 divisors, whose sum is σ = 54413522. Its totient is φ = 54413520.

The previous prime is 54413509. The next prime is 54413539. The reversal of 54413521 is 12531445.

It is a happy number.

54413521 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 can be written as a sum of positive squares in only one way, i.e., 28515600 + 25897921 = 5340^2 + 5089^2 .

It is a cyclic number.

It is not a de Polignac number, because 54413521 - 2⁷ = 54413393 is a prime.

It is not a weakly prime, because it can be changed into another prime (52413521) 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, 27206760 + 27206761.

It is an arithmetic number, because the mean of its divisors is an integer number (27206761).

Almost surely, 2^54413521 is an apocalyptic number.

It is an amenable number.

54413521 is a deficient number, since it is larger than the sum of its proper divisors (1).

54413521 is an equidigital number, since it uses as much as digits as its factorization.

54413521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 54413521 is about 7376.5521078618. The cubic root of 54413521 is about 378.9386844647.

Adding to 54413521 its reverse (12531445), we get a palindrome (66944966).

The spelling of 54413521 in words is "fifty-four million, four hundred thirteen thousand, five hundred twenty-one".