64155137 has 2 divisors, whose sum is σ = 64155138. Its totient is φ = 64155136.

The previous prime is 64155131. The next prime is 64155173. The reversal of 64155137 is 73155146.

64155137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (64155173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63744256 + 410881 = 7984^2 + 641^2 .

It is a cyclic number.

It is not a de Polignac number, because 64155137 - 2¹⁸ = 63892993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64155131) 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, 32077568 + 32077569.

It is an arithmetic number, because the mean of its divisors is an integer number (32077569).

Almost surely, 2^64155137 is an apocalyptic number.

It is an amenable number.

64155137 is a deficient number, since it is larger than the sum of its proper divisors (1).

64155137 is an equidigital number, since it uses as much as digits as its factorization.

64155137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 64155137 is about 8009.6901937591. The cubic root of 64155137 is about 400.3229412855.

Subtracting 64155137 from its reverse (73155146), we obtain a palindrome (9000009).

The spelling of 64155137 in words is "sixty-four million, one hundred fifty-five thousand, one hundred thirty-seven".