52085440 has 56 divisors (see below), whose sum is σ = 135312912. Its totient is φ = 18938880.

The previous prime is 52085437. The next prime is 52085443. The reversal of 52085440 is 4458025.

It is an interprime number because it is at equal distance from previous prime (52085437) and next prime (52085443).

It is a junction number, because it is equal to n+sod(n) for n = 52085399 and 52085408.

It is not an unprimeable number, because it can be changed into a prime (52085443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3879 + ... + 10918.

It is an arithmetic number, because the mean of its divisors is an integer number (2416302).

Almost surely, 2^52085440 is an apocalyptic number.

It is an amenable number.

52085440 is an abundant number, since it is smaller than the sum of its proper divisors (83227472).

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

52085440 is a wasteful number, since it uses less digits than its factorization.

52085440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14825 (or 14815 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 52085440 is about 7217.0243175425. The cubic root of 52085440 is about 373.4554305857.

It can be divided in two parts, 52085 and 440, that added together give a palindrome (52525).

The spelling of 52085440 in words is "fifty-two million, eighty-five thousand, four hundred forty".