52638540 has 48 divisors (see below), whose sum is σ = 150177888. Its totient is φ = 13771264.

The previous prime is 52638539. The next prime is 52638541. The reversal of 52638540 is 4583625.

It is an interprime number because it is at equal distance from previous prime (52638539) and next prime (52638541).

It is not an unprimeable number, because it can be changed into a prime (52638541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5097 + ... + 11456.

It is an arithmetic number, because the mean of its divisors is an integer number (3128706).

Almost surely, 2^52638540 is an apocalyptic number.

It is an amenable number.

52638540 is an abundant number, since it is smaller than the sum of its proper divisors (97539348).

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

52638540 is a wasteful number, since it uses less digits than its factorization.

52638540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16618 (or 16616 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 52638540 is about 7255.2422426822. The cubic root of 52638540 is about 374.7726978066.

The spelling of 52638540 in words is "fifty-two million, six hundred thirty-eight thousand, five hundred forty".