52650040 has 16 divisors (see below), whose sum is σ = 118462680. Its totient is φ = 21060000.

The previous prime is 52650029. The next prime is 52650053. The reversal of 52650040 is 4005625.

It is a junction number, because it is equal to n+sod(n) for n = 52649993 and 52650020.

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, 658086 + ... + 658165.

Almost surely, 2^52650040 is an apocalyptic number.

It is an amenable number.

52650040 is an abundant number, since it is smaller than the sum of its proper divisors (65812640).

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

52650040 is a wasteful number, since it uses less digits than its factorization.

52650040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316262 (or 1316258 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 52650040 is about 7256.0347297956. The cubic root of 52650040 is about 374.7999881545.

Adding to 52650040 its reverse (4005625), we get a palindrome (56655665).

The spelling of 52650040 in words is "fifty-two million, six hundred fifty thousand, forty".