52646540 has 48 divisors (see below), whose sum is σ = 116157888. Its totient is φ = 20004864.

The previous prime is 52646537. The next prime is 52646557. The reversal of 52646540 is 4564625.

It is a junction number, because it is equal to n+sod(n) for n = 52646497 and 52646506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88484 + ... + 89076.

It is an arithmetic number, because the mean of its divisors is an integer number (2419956).

Almost surely, 2^52646540 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 52646540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58078944).

52646540 is an abundant number, since it is smaller than the sum of its proper divisors (63511348).

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

52646540 is a wasteful number, since it uses less digits than its factorization.

52646540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 52646540 is about 7255.7935472283. The cubic root of 52646540 is about 374.7916828172.

The spelling of 52646540 in words is "fifty-two million, six hundred forty-six thousand, five hundred forty".