51790438 has 16 divisors (see below), whose sum is σ = 88980480. Its totient is φ = 22146696.

The previous prime is 51790399. The next prime is 51790441. The reversal of 51790438 is 83409715.

It is a junction number, because it is equal to n+sod(n) for n = 51790397 and 51790406.

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 7 ways as a sum of consecutive naturals, for example, 2845 + ... + 10567.

It is an arithmetic number, because the mean of its divisors is an integer number (5561280).

Almost surely, 2^51790438 is an apocalyptic number.

51790438 is a deficient number, since it is larger than the sum of its proper divisors (37190042).

51790438 is a wasteful number, since it uses less digits than its factorization.

51790438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8211.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 51790438 is about 7196.5573714103. The cubic root of 51790438 is about 372.7490351579.

The spelling of 51790438 in words is "fifty-one million, seven hundred ninety thousand, four hundred thirty-eight".