52217400440 has 32 divisors (see below), whose sum is σ = 119988924480. Its totient is φ = 20442556032.

The previous prime is 52217400439. The next prime is 52217400479. The reversal of 52217400440 is 4400471225.

It is a super-3 number, since 3×52217400440³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13885727 + ... + 13889486.

It is an arithmetic number, because the mean of its divisors is an integer number (3749653890).

Almost surely, 2^52217400440 is an apocalyptic number.

It is an amenable number.

52217400440 is an abundant number, since it is smaller than the sum of its proper divisors (67771524040).

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

52217400440 is a wasteful number, since it uses less digits than its factorization.

52217400440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27775271 (or 27775267 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 29.

Adding to 52217400440 its reverse (4400471225), we get a palindrome (56617871665).

The spelling of 52217400440 in words is "fifty-two billion, two hundred seventeen million, four hundred thousand, four hundred forty".