65542949 has 2 divisors, whose sum is σ = 65542950. Its totient is φ = 65542948.

The previous prime is 65542943. The next prime is 65542979. The reversal of 65542949 is 94924556.

65542949 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., 65529025 + 13924 = 8095^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 65542949 - 2⁴ = 65542933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65542943) 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, 32771474 + 32771475.

It is an arithmetic number, because the mean of its divisors is an integer number (32771475).

Almost surely, 2^65542949 is an apocalyptic number.

It is an amenable number.

65542949 is a deficient number, since it is larger than the sum of its proper divisors (1).

65542949 is an equidigital number, since it uses as much as digits as its factorization.

65542949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 44.

The square root of 65542949 is about 8095.8599913783. The cubic root of 65542949 is about 403.1889854487.

The spelling of 65542949 in words is "sixty-five million, five hundred forty-two thousand, nine hundred forty-nine".