51308652 has 24 divisors (see below), whose sum is σ = 126763056. Its totient is φ = 16096768.

The previous prime is 51308629. The next prime is 51308657. The reversal of 51308652 is 25680315.

51308652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51308657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125553 + ... + 125960.

It is an arithmetic number, because the mean of its divisors is an integer number (5281794).

Almost surely, 2^51308652 is an apocalyptic number.

It is an amenable number.

51308652 is an abundant number, since it is smaller than the sum of its proper divisors (75454404).

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

51308652 is a wasteful number, since it uses less digits than its factorization.

51308652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251537 (or 251535 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 51308652 is about 7163.0057936595. The cubic root of 51308652 is about 371.5895866842.

Adding to 51308652 its reverse (25680315), we get a palindrome (76988967).

The spelling of 51308652 in words is "fifty-one million, three hundred eight thousand, six hundred fifty-two".