52217952 has 96 divisors (see below), whose sum is σ = 143678304. Its totient is φ = 16588800.

The previous prime is 52217941. The next prime is 52217959. The reversal of 52217952 is 25971225.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×52217952² = 5453429022148608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52217959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216552 + ... + 216792.

It is an arithmetic number, because the mean of its divisors is an integer number (1496649).

Almost surely, 2^52217952 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 52217952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71839152).

52217952 is an abundant number, since it is smaller than the sum of its proper divisors (91460352).

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

52217952 is a wasteful number, since it uses less digits than its factorization.

52217952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 344 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 52217952 is about 7226.1990008579. The cubic root of 52217952 is about 373.7718684609.

The spelling of 52217952 in words is "fifty-two million, two hundred seventeen thousand, nine hundred fifty-two".