52400032 has 12 divisors (see below), whose sum is σ = 103162626. Its totient is φ = 26200000.

The previous prime is 52400017. The next prime is 52400039. The reversal of 52400032 is 23000425.

It can be written as a sum of positive squares in only one way, i.e., 50751376 + 1648656 = 7124^2 + 1284^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 52399979 and 52400015.

It is not an unprimeable number, because it can be changed into a prime (52400039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 818719 + ... + 818782.

Almost surely, 2^52400032 is an apocalyptic number.

It is an amenable number.

52400032 is a deficient number, since it is larger than the sum of its proper divisors (50762594).

52400032 is a wasteful number, since it uses less digits than its factorization.

52400032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637511 (or 1637503 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 52400032 is about 7238.7866386571. The cubic root of 52400032 is about 374.2058024473.

Adding to 52400032 its reverse (23000425), we get a palindrome (75400457).

The spelling of 52400032 in words is "fifty-two million, four hundred thousand, thirty-two".