51334040 has 32 divisors (see below), whose sum is σ = 116100000. Its totient is φ = 20427264.

The previous prime is 51334039. The next prime is 51334069. The reversal of 51334040 is 4043315.

51334040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4736 + ... + 11184.

It is an arithmetic number, because the mean of its divisors is an integer number (3628125).

Almost surely, 2^51334040 is an apocalyptic number.

It is an amenable number.

51334040 is an abundant number, since it is smaller than the sum of its proper divisors (64765960).

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

51334040 is a wasteful number, since it uses less digits than its factorization.

51334040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6659 (or 6655 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 51334040 is about 7164.7777355617. Note that the first 4 decimals coincide. The cubic root of 51334040 is about 371.6508652437.

Adding to 51334040 its reverse (4043315), we get a palindrome (55377355).

The spelling of 51334040 in words is "fifty-one million, three hundred thirty-four thousand, forty".