51418812 has 48 divisors (see below), whose sum is σ = 127643040. Its totient is φ = 16054272.

The previous prime is 51418793. The next prime is 51418817. The reversal of 51418812 is 21881415.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51418812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51418817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54408 + ... + 55344.

It is an arithmetic number, because the mean of its divisors is an integer number (2659230).

Almost surely, 2^51418812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51418812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63821520).

51418812 is an abundant number, since it is smaller than the sum of its proper divisors (76224228).

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

51418812 is a wasteful number, since it uses less digits than its factorization.

51418812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230 (or 1228 counting only the distinct ones).

The product of its digits is 2560, while the sum is 30.

The square root of 51418812 is about 7170.6911800746. The cubic root of 51418812 is about 371.8553316528.

It can be divided in two parts, 514188 and 12, that multiplied together give a square (6170256 = 2484²).

The spelling of 51418812 in words is "fifty-one million, four hundred eighteen thousand, eight hundred twelve".