65155120 has 40 divisors (see below), whose sum is σ = 153204480. Its totient is φ = 25766400.

The previous prime is 65155117. The next prime is 65155121. The reversal of 65155120 is 2155156.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65155121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2545 + ... + 11695.

It is an arithmetic number, because the mean of its divisors is an integer number (3830112).

Almost surely, 2^65155120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65155120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76602240).

65155120 is an abundant number, since it is smaller than the sum of its proper divisors (88049360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65155120 is a wasteful number, since it uses less digits than its factorization.

65155120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9253 (or 9247 counting only the distinct ones).

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

The square root of 65155120 is about 8071.8721496317. The cubic root of 65155120 is about 402.3921653436.

The spelling of 65155120 in words is "sixty-five million, one hundred fifty-five thousand, one hundred twenty".