54965681 has 2 divisors, whose sum is σ = 54965682. Its totient is φ = 54965680.

The previous prime is 54965629. The next prime is 54965693. The reversal of 54965681 is 18656945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54523456 + 442225 = 7384^2 + 665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54965681 is a prime.

It is a super-2 number, since 2×54965681² = 6042452175587522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54965621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27482840 + 27482841.

It is an arithmetic number, because the mean of its divisors is an integer number (27482841).

Almost surely, 2^54965681 is an apocalyptic number.

It is an amenable number.

54965681 is a deficient number, since it is larger than the sum of its proper divisors (1).

54965681 is an equidigital number, since it uses as much as digits as its factorization.

54965681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 44.

The square root of 54965681 is about 7413.8843395348. The cubic root of 54965681 is about 380.2161305119.

The spelling of 54965681 in words is "fifty-four million, nine hundred sixty-five thousand, six hundred eighty-one".