52281616 has 40 divisors (see below), whose sum is σ = 107235200. Its totient is φ = 24624000.

The previous prime is 52281589. The next prime is 52281643. The reversal of 52281616 is 61618225.

It is an interprime number because it is at equal distance from previous prime (52281589) and next prime (52281643).

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, 69241 + ... + 69991.

It is an arithmetic number, because the mean of its divisors is an integer number (2680880).

Almost surely, 2^52281616 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 52281616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53617600).

52281616 is an abundant number, since it is smaller than the sum of its proper divisors (54953584).

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

52281616 is a wasteful number, since it uses less digits than its factorization.

52281616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 1001 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 52281616 is about 7230.6027411275. The cubic root of 52281616 is about 373.9237073545.

It can be divided in two parts, 5228 and 1616, that multiplied together give a palindrome (8448448).

The spelling of 52281616 in words is "fifty-two million, two hundred eighty-one thousand, six hundred sixteen".