51201120 has 48 divisors (see below), whose sum is σ = 161285040. Its totient is φ = 13653504.

The previous prime is 51201113. The next prime is 51201131. The reversal of 51201120 is 2110215.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 51201096 and 51201105.

It is a congruent number.

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, 52855 + ... + 53814.

It is an arithmetic number, because the mean of its divisors is an integer number (3360105).

Almost surely, 2^51201120 is an apocalyptic number.

It is an amenable number.

51201120 is an abundant number, since it is smaller than the sum of its proper divisors (110083920).

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

51201120 is a wasteful number, since it uses less digits than its factorization.

51201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106687 (or 106679 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 51201120 is about 7155.4957899505. The cubic root of 51201120 is about 371.3298142628.

Adding to 51201120 its reverse (2110215), we get a palindrome (53311335).

The spelling of 51201120 in words is "fifty-one million, two hundred one thousand, one hundred twenty".