64527131 has 4 divisors (see below), whose sum is σ = 65153712. Its totient is φ = 63900552.

The previous prime is 64527107. The next prime is 64527161. The reversal of 64527131 is 13172546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64527131 is a prime.

It is a super-2 number, since 2×64527131² = 8327501270182322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64527094 and 64527103.

It is not an unprimeable number, because it can be changed into a prime (64527101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313136 + ... + 313341.

It is an arithmetic number, because the mean of its divisors is an integer number (16288428).

Almost surely, 2^64527131 is an apocalyptic number.

64527131 is a deficient number, since it is larger than the sum of its proper divisors (626581).

64527131 is a wasteful number, since it uses less digits than its factorization.

64527131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626580.

The product of its digits is 5040, while the sum is 29.

The square root of 64527131 is about 8032.8781267986. The cubic root of 64527131 is about 401.0951882534.

Adding to 64527131 its reverse (13172546), we get a palindrome (77699677).

The spelling of 64527131 in words is "sixty-four million, five hundred twenty-seven thousand, one hundred thirty-one".