65601155 has 4 divisors (see below), whose sum is σ = 78721392. Its totient is φ = 52480920.

The previous prime is 65601149. The next prime is 65601157. The reversal of 65601155 is 55110656.

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

It is not a de Polignac number, because 65601155 - 2⁴ = 65601139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65601157) 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, 6560111 + ... + 6560120.

It is an arithmetic number, because the mean of its divisors is an integer number (19680348).

Almost surely, 2^65601155 is an apocalyptic number.

65601155 is a deficient number, since it is larger than the sum of its proper divisors (13120237).

65601155 is a wasteful number, since it uses less digits than its factorization.

65601155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13120236.

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

The square root of 65601155 is about 8099.4539939430. The cubic root of 65601155 is about 403.3083019929.

It can be divided in two parts, 65601 and 155, that added together give a palindrome (65756).

The spelling of 65601155 in words is "sixty-five million, six hundred one thousand, one hundred fifty-five".