51036040 has 64 divisors (see below), whose sum is σ = 132658560. Its totient is φ = 17464320.

The previous prime is 51036017. The next prime is 51036043. The reversal of 51036040 is 4063015.

51036040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51035999 and 51036017.

It is not an unprimeable number, because it can be changed into a prime (51036043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4069 + ... + 10891.

It is an arithmetic number, because the mean of its divisors is an integer number (2072790).

Almost surely, 2^51036040 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 51036040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66329280).

51036040 is an abundant number, since it is smaller than the sum of its proper divisors (81622520).

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

51036040 is a wasteful number, since it uses less digits than its factorization.

51036040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6862 (or 6858 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51036040 is about 7143.9512876279. The cubic root of 51036040 is about 370.9303104814.

Adding to 51036040 its reverse (4063015), we get a palindrome (55099055).

The spelling of 51036040 in words is "fifty-one million, thirty-six thousand, forty".