52305040 has 40 divisors (see below), whose sum is σ = 121976568. Its totient is φ = 20858880.

The previous prime is 52305037. The next prime is 52305049. The reversal of 52305040 is 4050325.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3640464 + 48664576 = 1908^2 + 6976^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 52304999 and 52305017.

It is not an unprimeable number, because it can be changed into a prime (52305049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32904 + ... + 34456.

Almost surely, 2^52305040 is an apocalyptic number.

It is an amenable number.

52305040 is an abundant number, since it is smaller than the sum of its proper divisors (69671528).

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

52305040 is a wasteful number, since it uses less digits than its factorization.

52305040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987 (or 1981 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 52305040 is about 7232.2223417149. Note that the first 3 decimals coincide. The cubic root of 52305040 is about 373.9795426674.

Adding to 52305040 its reverse (4050325), we get a palindrome (56355365).

The spelling of 52305040 in words is "fifty-two million, three hundred five thousand, forty".