51202120 has 32 divisors (see below), whose sum is σ = 115732800. Its totient is φ = 20387008.

The previous prime is 51202097. The next prime is 51202159. The reversal of 51202120 is 2120215.

It is a self number, because there is not a number n which added to its sum of digits gives 51202120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6261 + ... + 11899.

It is an arithmetic number, because the mean of its divisors is an integer number (3616650).

Almost surely, 2^51202120 is an apocalyptic number.

It is an amenable number.

51202120 is an abundant number, since it is smaller than the sum of its proper divisors (64530680).

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

51202120 is a wasteful number, since it uses less digits than its factorization.

51202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5877 (or 5873 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 51202120 is about 7155.5656659694. The cubic root of 51202120 is about 371.3322317060.

Adding to 51202120 its reverse (2120215), we get a palindrome (53322335).

The spelling of 51202120 in words is "fifty-one million, two hundred two thousand, one hundred twenty".