54966521 has 2 divisors, whose sum is σ = 54966522. Its totient is φ = 54966520.

The previous prime is 54966517. The next prime is 54966529. The reversal of 54966521 is 12566945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54834025 + 132496 = 7405^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 54966521 - 2² = 54966517 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54966529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27483260 + 27483261.

It is an arithmetic number, because the mean of its divisors is an integer number (27483261).

Almost surely, 2^54966521 is an apocalyptic number.

It is an amenable number.

54966521 is a deficient number, since it is larger than the sum of its proper divisors (1).

54966521 is an equidigital number, since it uses as much as digits as its factorization.

54966521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The square root of 54966521 is about 7413.9409897840. The cubic root of 54966521 is about 380.2180673564.

The spelling of 54966521 in words is "fifty-four million, nine hundred sixty-six thousand, five hundred twenty-one".