52379440 has 20 divisors (see below), whose sum is σ = 121782384. Its totient is φ = 20951744.

The previous prime is 52379413. The next prime is 52379443. The reversal of 52379440 is 4497325.

It is a tau number, because it is divible by the number of its divisors (20).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 52379396 and 52379405.

It is not an unprimeable number, because it can be changed into a prime (52379443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327292 + ... + 327451.

Almost surely, 2^52379440 is an apocalyptic number.

It is an amenable number.

52379440 is an abundant number, since it is smaller than the sum of its proper divisors (69402944).

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

52379440 is a wasteful number, since it uses less digits than its factorization.

52379440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654756 (or 654750 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 52379440 is about 7237.3641610741. The cubic root of 52379440 is about 374.1567779513.

The spelling of 52379440 in words is "fifty-two million, three hundred seventy-nine thousand, four hundred forty".