52685240 has 16 divisors (see below), whose sum is σ = 118541880. Its totient is φ = 21074080.

The previous prime is 52685239. The next prime is 52685267. The reversal of 52685240 is 4258625.

It is a junction number, because it is equal to n+sod(n) for n = 52685197 and 52685206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658526 + ... + 658605.

Almost surely, 2^52685240 is an apocalyptic number.

It is an amenable number.

52685240 is an abundant number, since it is smaller than the sum of its proper divisors (65856640).

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

52685240 is a wasteful number, since it uses less digits than its factorization.

52685240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317142 (or 1317138 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 52685240 is about 7258.4598917401. The cubic root of 52685240 is about 374.8834956602.

It can be divided in two parts, 52685 and 240, that added together give a palindrome (52925).

The spelling of 52685240 in words is "fifty-two million, six hundred eighty-five thousand, two hundred forty".