65651155 has 4 divisors (see below), whose sum is σ = 78781392. Its totient is φ = 52520920.

The previous prime is 65651147. The next prime is 65651197. The reversal of 65651155 is 55115656.

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

It is not a de Polignac number, because 65651155 - 2³ = 65651147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65651155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6565111 + ... + 6565120.

It is an arithmetic number, because the mean of its divisors is an integer number (19695348).

Almost surely, 2^65651155 is an apocalyptic number.

65651155 is a deficient number, since it is larger than the sum of its proper divisors (13130237).

65651155 is a wasteful number, since it uses less digits than its factorization.

65651155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13130236.

The product of its digits is 22500, while the sum is 34.

The square root of 65651155 is about 8102.5400338412. The cubic root of 65651155 is about 403.4107407078.

The spelling of 65651155 in words is "sixty-five million, six hundred fifty-one thousand, one hundred fifty-five".