65051651 has 4 divisors (see below), whose sum is σ = 74344752. Its totient is φ = 55758552.

The previous prime is 65051641. The next prime is 65051731. The reversal of 65051651 is 15615056.

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

It is a cyclic number.

It is not a de Polignac number, because 65051651 - 2¹⁸ = 64789507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65051641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4646540 + ... + 4646553.

It is an arithmetic number, because the mean of its divisors is an integer number (18586188).

Almost surely, 2^65051651 is an apocalyptic number.

65051651 is a deficient number, since it is larger than the sum of its proper divisors (9293101).

65051651 is an equidigital number, since it uses as much as digits as its factorization.

65051651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9293100.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 65051651 is about 8065.4603712373. The cubic root of 65051651 is about 402.1790474088.

The spelling of 65051651 in words is "sixty-five million, fifty-one thousand, six hundred fifty-one".