65548801 has 2 divisors, whose sum is σ = 65548802. Its totient is φ = 65548800.

The previous prime is 65548799. The next prime is 65548807. The reversal of 65548801 is 10884556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40947201 + 24601600 = 6399^2 + 4960^2 .

It is a cyclic number.

It is not a de Polignac number, because 65548801 - 2¹ = 65548799 is a prime.

Together with 65548799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (65548807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32774400 + 32774401.

It is an arithmetic number, because the mean of its divisors is an integer number (32774401).

Almost surely, 2^65548801 is an apocalyptic number.

65548801 is the 5121-st centered pentagonal number.

It is an amenable number.

65548801 is a deficient number, since it is larger than the sum of its proper divisors (1).

65548801 is an equidigital number, since it uses as much as digits as its factorization.

65548801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 65548801 is about 8096.2214026050. The cubic root of 65548801 is about 403.2009846633.

The spelling of 65548801 in words is "sixty-five million, five hundred forty-eight thousand, eight hundred one".