65432291 has 4 divisors (see below), whose sum is σ = 65513784. Its totient is φ = 65350800.

The previous prime is 65432281. The next prime is 65432293. The reversal of 65432291 is 19223456.

It is a happy number.

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-65432291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65432293) 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, 39530 + ... + 41151.

It is an arithmetic number, because the mean of its divisors is an integer number (16378446).

Almost surely, 2^65432291 is an apocalyptic number.

65432291 is a deficient number, since it is larger than the sum of its proper divisors (81493).

65432291 is an equidigital number, since it uses as much as digits as its factorization.

65432291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81492.

The product of its digits is 12960, while the sum is 32.

The square root of 65432291 is about 8089.0228705326. The cubic root of 65432291 is about 402.9619525394.

The spelling of 65432291 in words is "sixty-five million, four hundred thirty-two thousand, two hundred ninety-one".