65531017 has 4 divisors (see below), whose sum is σ = 65812500. Its totient is φ = 65249536.

The previous prime is 65530999. The next prime is 65531023. The reversal of 65531017 is 71013556.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6610041 + 58920976 = 2571^2 + 7676^2 .

It is a cyclic number.

It is not a de Polignac number, because 65531017 - 2⁷ = 65530889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65531087) 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, 140392 + ... + 140857.

It is an arithmetic number, because the mean of its divisors is an integer number (16453125).

Almost surely, 2^65531017 is an apocalyptic number.

It is an amenable number.

65531017 is a deficient number, since it is larger than the sum of its proper divisors (281483).

65531017 is a wasteful number, since it uses less digits than its factorization.

65531017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281482.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 65531017 is about 8095.1230379779. The cubic root of 65531017 is about 403.1645173047.

The spelling of 65531017 in words is "sixty-five million, five hundred thirty-one thousand, seventeen".