64545157 has 2 divisors, whose sum is σ = 64545158. Its totient is φ = 64545156.

The previous prime is 64545059. The next prime is 64545167. The reversal of 64545157 is 75154546.

It is a happy number.

64545157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 8034²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64545156 + 1 = 8034^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64545157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64545167) 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, 32272578 + 32272579.

It is an arithmetic number, because the mean of its divisors is an integer number (32272579).

Almost surely, 2^64545157 is an apocalyptic number.

It is an amenable number.

64545157 is a deficient number, since it is larger than the sum of its proper divisors (1).

64545157 is an equidigital number, since it uses as much as digits as its factorization.

64545157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 37.

The square root of 64545157 is about 8034.0000622355. Note that the first 4 decimals coincide. The cubic root of 64545157 is about 401.1325341398.

It can be divided in two parts, 6454 and 5157, that added together give a palindrome (11611).

The spelling of 64545157 in words is "sixty-four million, five hundred forty-five thousand, one hundred fifty-seven".