65159957 has 2 divisors, whose sum is σ = 65159958. Its totient is φ = 65159956.

The previous prime is 65159953. The next prime is 65159959. The reversal of 65159957 is 75995156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33339076 + 31820881 = 5774^2 + 5641^2 .

It is a cyclic number.

It is not a de Polignac number, because 65159957 - 2² = 65159953 is a prime.

Together with 65159959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65159951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32579978 + 32579979.

It is an arithmetic number, because the mean of its divisors is an integer number (32579979).

Almost surely, 2^65159957 is an apocalyptic number.

It is an amenable number.

65159957 is a deficient number, since it is larger than the sum of its proper divisors (1).

65159957 is an equidigital number, since it uses as much as digits as its factorization.

65159957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 425250, while the sum is 47.

The square root of 65159957 is about 8072.1717647731. The cubic root of 65159957 is about 402.4021227229.

The spelling of 65159957 in words is "sixty-five million, one hundred fifty-nine thousand, nine hundred fifty-seven".