65224500 has 192 divisors, whose sum is σ = 213857280. Its totient is φ = 15312000.

The previous prime is 65224493. The next prime is 65224501. The reversal of 65224500 is 542256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65224501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 973467 + ... + 973533.

It is an arithmetic number, because the mean of its divisors is an integer number (1113840).

Almost surely, 2^65224500 is an apocalyptic number.

65224500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65224500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106928640).

65224500 is an abundant number, since it is smaller than the sum of its proper divisors (148632780).

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

65224500 is a wasteful number, since it uses less digits than its factorization.

65224500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 65224500 is about 8076.1686460846. The cubic root of 65224500 is about 402.5349428918.

Adding to 65224500 its reverse (542256), we get a palindrome (65766756).

It can be divided in two parts, 652 and 24500, that added together give a palindrome (25152).

The spelling of 65224500 in words is "sixty-five million, two hundred twenty-four thousand, five hundred".