51200620 has 12 divisors (see below), whose sum is σ = 107521344. Its totient is φ = 20480240.

The previous prime is 51200603. The next prime is 51200621. The reversal of 51200620 is 2600215.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51200594 and 51200603.

It is not an unprimeable number, because it can be changed into a prime (51200621) 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 3 ways as a sum of consecutive naturals, for example, 1279996 + ... + 1280035.

It is an arithmetic number, because the mean of its divisors is an integer number (8960112).

Almost surely, 2^51200620 is an apocalyptic number.

It is an amenable number.

51200620 is an abundant number, since it is smaller than the sum of its proper divisors (56320724).

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

51200620 is a wasteful number, since it uses less digits than its factorization.

51200620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560040 (or 2560038 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51200620 is about 7155.4608516852. The cubic root of 51200620 is about 371.3286055294.

Adding to 51200620 its reverse (2600215), we get a palindrome (53800835).

The spelling of 51200620 in words is "fifty-one million, two hundred thousand, six hundred twenty".