51054040 has 16 divisors (see below), whose sum is σ = 114871680. Its totient is φ = 20421600.

The previous prime is 51054023. The next prime is 51054053. The reversal of 51054040 is 4045015.

It is a junction number, because it is equal to n+sod(n) for n = 51053999 and 51054017.

It is a congruent number.

It is an unprimeable number.

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, 638136 + ... + 638215.

It is an arithmetic number, because the mean of its divisors is an integer number (7179480).

Almost surely, 2^51054040 is an apocalyptic number.

It is an amenable number.

51054040 is an abundant number, since it is smaller than the sum of its proper divisors (63817640).

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

51054040 is a wasteful number, since it uses less digits than its factorization.

51054040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276362 (or 1276358 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 51054040 is about 7145.2109835889. The cubic root of 51054040 is about 370.9739133994.

Adding to 51054040 its reverse (4045015), we get a palindrome (55099055).

The spelling of 51054040 in words is "fifty-one million, fifty-four thousand, forty".