54663649 has 2 divisors, whose sum is σ = 54663650. Its totient is φ = 54663648.

The previous prime is 54663613. The next prime is 54663673. The reversal of 54663649 is 94636645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29593600 + 25070049 = 5440^2 + 5007^2 .

It is a cyclic number.

It is not a de Polignac number, because 54663649 - 2²³ = 46275041 is a prime.

It is a super-2 number, since 2×54663649² = 5976229043990402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54663949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27331824 + 27331825.

It is an arithmetic number, because the mean of its divisors is an integer number (27331825).

Almost surely, 2^54663649 is an apocalyptic number.

It is an amenable number.

54663649 is a deficient number, since it is larger than the sum of its proper divisors (1).

54663649 is an equidigital number, since it uses as much as digits as its factorization.

54663649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The square root of 54663649 is about 7393.4869310766. The cubic root of 54663649 is about 379.5184319872.

The spelling of 54663649 in words is "fifty-four million, six hundred sixty-three thousand, six hundred forty-nine".