51013420 has 24 divisors (see below), whose sum is σ = 107355024. Its totient is φ = 20362176.

The previous prime is 51013409. The next prime is 51013439. The reversal of 51013420 is 2431015.

It is a junction number, because it is equal to n+sod(n) for n = 51013394 and 51013403.

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, 8022 + ... + 12898.

It is an arithmetic number, because the mean of its divisors is an integer number (4473126).

Almost surely, 2^51013420 is an apocalyptic number.

It is an amenable number.

51013420 is an abundant number, since it is smaller than the sum of its proper divisors (56341604).

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

51013420 is a wasteful number, since it uses less digits than its factorization.

51013420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5409 (or 5407 counting only the distinct ones).

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

The square root of 51013420 is about 7142.3679546772. The cubic root of 51013420 is about 370.8755016083.

Adding to 51013420 its reverse (2431015), we get a palindrome (53444435).

The spelling of 51013420 in words is "fifty-one million, thirteen thousand, four hundred twenty".