65852531 has 4 divisors (see below), whose sum is σ = 65985000. Its totient is φ = 65720064.

The previous prime is 65852513. The next prime is 65852539. The reversal of 65852531 is 13525856.

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-65852531 is a prime.

It is a super-2 number, since 2×65852531² = 8673111678211922, 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 = 65852491 and 65852500.

It is not an unprimeable number, because it can be changed into a prime (65852539) 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, 65486 + ... + 66483.

It is an arithmetic number, because the mean of its divisors is an integer number (16496250).

Almost surely, 2^65852531 is an apocalyptic number.

65852531 is a deficient number, since it is larger than the sum of its proper divisors (132469).

65852531 is a wasteful number, since it uses less digits than its factorization.

65852531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132468.

The product of its digits is 36000, while the sum is 35.

The square root of 65852531 is about 8114.9572395669. The cubic root of 65852531 is about 403.8227889100.

The spelling of 65852531 in words is "sixty-five million, eight hundred fifty-two thousand, five hundred thirty-one".