65521848 has 128 divisors (see below), whose sum is σ = 202014720. Its totient is φ = 17297280.

The previous prime is 65521837. The next prime is 65521849. The reversal of 65521848 is 84812556.

It is a super-2 number, since 2×65521848² = 8586225130670208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65521849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119511 + ... + 120057.

It is an arithmetic number, because the mean of its divisors is an integer number (1578240).

Almost surely, 2^65521848 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 65521848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101007360).

65521848 is an abundant number, since it is smaller than the sum of its proper divisors (136492872).

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

65521848 is a wasteful number, since it uses less digits than its factorization.

65521848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 613 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 65521848 is about 8094.5566895291. The cubic root of 65521848 is about 403.1457130394.

The spelling of 65521848 in words is "sixty-five million, five hundred twenty-one thousand, eight hundred forty-eight".