65115552 has 48 divisors (see below), whose sum is σ = 172210752. Its totient is φ = 21542400.

The previous prime is 65115541. The next prime is 65115569. The reversal of 65115552 is 25551156.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×65115552² = 8480070224529408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10677 + ... + 15627.

It is an arithmetic number, because the mean of its divisors is an integer number (3587724).

Almost surely, 2^65115552 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 65115552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86105376).

65115552 is an abundant number, since it is smaller than the sum of its proper divisors (107095200).

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

65115552 is a wasteful number, since it uses less digits than its factorization.

65115552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101 (or 5093 counting only the distinct ones).

The product of its digits is 7500, while the sum is 30.

The square root of 65115552 is about 8069.4207970585. The cubic root of 65115552 is about 402.3106927116.

The spelling of 65115552 in words is "sixty-five million, one hundred fifteen thousand, five hundred fifty-two".