65211252 has 48 divisors (see below), whose sum is σ = 161808192. Its totient is φ = 20369920.

The previous prime is 65211239. The next prime is 65211271. The reversal of 65211252 is 25211256.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59227 + ... + 60317.

It is an arithmetic number, because the mean of its divisors is an integer number (3371004).

Almost surely, 2^65211252 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 65211252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80904096).

65211252 is an abundant number, since it is smaller than the sum of its proper divisors (96596940).

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

65211252 is a wasteful number, since it uses less digits than its factorization.

65211252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408 (or 1406 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 65211252 is about 8075.3484135361. The cubic root of 65211252 is about 402.5076875710.

The spelling of 65211252 in words is "sixty-five million, two hundred eleven thousand, two hundred fifty-two".