51040472 has 16 divisors (see below), whose sum is σ = 109372560. Its totient is φ = 21874464.

The previous prime is 51040471. The next prime is 51040481. The reversal of 51040472 is 27404015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51040471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455663 + ... + 455774.

It is an arithmetic number, because the mean of its divisors is an integer number (6835785).

Almost surely, 2^51040472 is an apocalyptic number.

It is an amenable number.

51040472 is an abundant number, since it is smaller than the sum of its proper divisors (58332088).

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

51040472 is a wasteful number, since it uses less digits than its factorization.

51040472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911450 (or 911446 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 51040472 is about 7144.2614733785. The cubic root of 51040472 is about 370.9410474400.

Adding to 51040472 its reverse (27404015), we get a palindrome (78444487).

The spelling of 51040472 in words is "fifty-one million, forty thousand, four hundred seventy-two".