52688637 has 10 divisors (see below), whose sum is σ = 78707838. Its totient is φ = 35125704.

The previous prime is 52688591. The next prime is 52688651. The reversal of 52688637 is 73688625.

52688637 is a `hidden beast` number, since 5 + 2 + 6 + 8 + 8 + 637 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52620516 + 68121 = 7254^2 + 261^2 .

It is not a de Polignac number, because 52688637 - 2⁷ = 52688509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52688592 and 52688601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52688677) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 325158 + ... + 325319.

Almost surely, 2^52688637 is an apocalyptic number.

It is an amenable number.

52688637 is a deficient number, since it is larger than the sum of its proper divisors (26019201).

52688637 is an equidigital number, since it uses as much as digits as its factorization.

52688637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650489 (or 650480 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 52688637 is about 7258.6938907768. The cubic root of 52688637 is about 374.8915526408.

The spelling of 52688637 in words is "fifty-two million, six hundred eighty-eight thousand, six hundred thirty-seven".