52722320 has 80 divisors (see below), whose sum is σ = 144657408. Its totient is φ = 17487360.

The previous prime is 52722317. The next prime is 52722323. The reversal of 52722320 is 2322725.

It is an interprime number because it is at equal distance from previous prime (52722317) and next prime (52722323).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (52722323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15842 + ... + 18878.

Almost surely, 2^52722320 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 52722320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72328704).

52722320 is an abundant number, since it is smaller than the sum of its proper divisors (91935088).

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

52722320 is a wasteful number, since it uses less digits than its factorization.

52722320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088 (or 3082 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 52722320 is about 7261.0137033337. The cubic root of 52722320 is about 374.9714230075.

The spelling of 52722320 in words is "fifty-two million, seven hundred twenty-two thousand, three hundred twenty".