65540351 has 4 divisors (see below), whose sum is σ = 65625912. Its totient is φ = 65454792.

The previous prime is 65540341. The next prime is 65540353. The reversal of 65540351 is 15304556.

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-65540351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65540353) 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, 41621 + ... + 43166.

It is an arithmetic number, because the mean of its divisors is an integer number (16406478).

Almost surely, 2^65540351 is an apocalyptic number.

65540351 is a deficient number, since it is larger than the sum of its proper divisors (85561).

65540351 is an equidigital number, since it uses as much as digits as its factorization.

65540351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85560.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 65540351 is about 8095.6995374087. The cubic root of 65540351 is about 403.1836581590.

The spelling of 65540351 in words is "sixty-five million, five hundred forty thousand, three hundred fifty-one".