52485640 has 32 divisors (see below), whose sum is σ = 119206080. Its totient is φ = 20796352.

The previous prime is 52485599. The next prime is 52485661. The reversal of 52485640 is 4658425.

It is a junction number, because it is equal to n+sod(n) for n = 52485596 and 52485605.

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, 1852 + ... + 10411.

It is an arithmetic number, because the mean of its divisors is an integer number (3725190).

Almost surely, 2^52485640 is an apocalyptic number.

It is an amenable number.

52485640 is an abundant number, since it is smaller than the sum of its proper divisors (66720440).

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

52485640 is a wasteful number, since it uses less digits than its factorization.

52485640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12381 (or 12377 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 52485640 is about 7244.6973711812. The cubic root of 52485640 is about 374.4094764994.

The spelling of 52485640 in words is "fifty-two million, four hundred eighty-five thousand, six hundred forty".