52649860 has 12 divisors (see below), whose sum is σ = 110564748. Its totient is φ = 21059936.

The previous prime is 52649851. The next prime is 52649869. The reversal of 52649860 is 6894625.

It is a happy number.

52649860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52649851) and next prime (52649869).

It can be written as a sum of positive squares in 2 ways, for example, as 19079424 + 33570436 = 4368^2 + 5794^2 .

It is not an unprimeable number, because it can be changed into a prime (52649869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1316227 + ... + 1316266.

It is an arithmetic number, because the mean of its divisors is an integer number (9213729).

Almost surely, 2^52649860 is an apocalyptic number.

It is an amenable number.

52649860 is an abundant number, since it is smaller than the sum of its proper divisors (57914888).

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

52649860 is a wasteful number, since it uses less digits than its factorization.

52649860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632502 (or 2632500 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 52649860 is about 7256.0223263163. The cubic root of 52649860 is about 374.7995610318.

The spelling of 52649860 in words is "fifty-two million, six hundred forty-nine thousand, eight hundred sixty".