52489640 has 32 divisors (see below), whose sum is σ = 134974080. Its totient is φ = 17996352.

The previous prime is 52489637. The next prime is 52489667. The reversal of 52489640 is 4698425.

It is a junction number, because it is equal to n+sod(n) for n = 52489594 and 52489603.

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, 93452 + ... + 94011.

It is an arithmetic number, because the mean of its divisors is an integer number (4217940).

Almost surely, 2^52489640 is an apocalyptic number.

It is an amenable number.

52489640 is an abundant number, since it is smaller than the sum of its proper divisors (82484440).

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

52489640 is a wasteful number, since it uses less digits than its factorization.

52489640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187481 (or 187477 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 52489640 is about 7244.9734299030. The cubic root of 52489640 is about 374.4189876715.

The spelling of 52489640 in words is "fifty-two million, four hundred eighty-nine thousand, six hundred forty".