64132531 has 2 divisors, whose sum is σ = 64132532. Its totient is φ = 64132530.

The previous prime is 64132511. The next prime is 64132567. The reversal of 64132531 is 13523146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64132531 - 2⁵ = 64132499 is a prime.

It is a super-2 number, since 2×64132531² = 8225963064931922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64132496 and 64132505.

It is not a weakly prime, because it can be changed into another prime (64132511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32066265 + 32066266.

It is an arithmetic number, because the mean of its divisors is an integer number (32066266).

Almost surely, 2^64132531 is an apocalyptic number.

64132531 is a deficient number, since it is larger than the sum of its proper divisors (1).

64132531 is an equidigital number, since it uses as much as digits as its factorization.

64132531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 64132531 is about 8008.2789037346. The cubic root of 64132531 is about 400.2759158823.

Adding to 64132531 its reverse (13523146), we get a palindrome (77655677).

The spelling of 64132531 in words is "sixty-four million, one hundred thirty-two thousand, five hundred thirty-one".