65251051 has 4 divisors (see below), whose sum is σ = 65325832. Its totient is φ = 65176272.

The previous prime is 65251033. The next prime is 65251057. The reversal of 65251051 is 15015256.

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-65251051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65251057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36066 + ... + 37831.

It is an arithmetic number, because the mean of its divisors is an integer number (16331458).

Almost surely, 2^65251051 is an apocalyptic number.

65251051 is a deficient number, since it is larger than the sum of its proper divisors (74781).

65251051 is an equidigital number, since it uses as much as digits as its factorization.

65251051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74780.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 65251051 is about 8077.8122657066. The cubic root of 65251051 is about 402.5895555776.

The spelling of 65251051 in words is "sixty-five million, two hundred fifty-one thousand, fifty-one".