64531151 has 2 divisors, whose sum is σ = 64531152. Its totient is φ = 64531150.

The previous prime is 64531109. The next prime is 64531267. The reversal of 64531151 is 15113546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64531151 - 2¹⁴ = 64514767 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64531151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64531651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32265575 + 32265576.

It is an arithmetic number, because the mean of its divisors is an integer number (32265576).

Almost surely, 2^64531151 is an apocalyptic number.

64531151 is a deficient number, since it is larger than the sum of its proper divisors (1).

64531151 is an equidigital number, since it uses as much as digits as its factorization.

64531151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 26.

The square root of 64531151 is about 8033.1283445492. The cubic root of 64531151 is about 401.1035174071.

Adding to 64531151 its reverse (15113546), we get a palindrome (79644697).

The spelling of 64531151 in words is "sixty-four million, five hundred thirty-one thousand, one hundred fifty-one".