51430938 has 16 divisors (see below), whose sum is σ = 110774496. Its totient is φ = 15824880.

The previous prime is 51430919. The next prime is 51430943. The reversal of 51430938 is 83903415.

It is a junction number, because it is equal to n+sod(n) for n = 51430899 and 51430908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329608 + ... + 329763.

It is an arithmetic number, because the mean of its divisors is an integer number (6923406).

Almost surely, 2^51430938 is an apocalyptic number.

51430938 is an abundant number, since it is smaller than the sum of its proper divisors (59343558).

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

51430938 is a wasteful number, since it uses less digits than its factorization.

51430938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659389.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 51430938 is about 7171.5366554177. The cubic root of 51430938 is about 371.8845606656.

The spelling of 51430938 in words is "fifty-one million, four hundred thirty thousand, nine hundred thirty-eight".