51839407 has 2 divisors, whose sum is σ = 51839408. Its totient is φ = 51839406.

The previous prime is 51839383. The next prime is 51839423. The reversal of 51839407 is 70493815.

51839407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51839407 - 2⁷ = 51839279 is a prime.

It is a super-2 number, since 2×51839407² = 5374648236223298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51839497) by changing a digit.

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 as a sum of consecutive naturals, namely, 25919703 + 25919704.

It is an arithmetic number, because the mean of its divisors is an integer number (25919704).

Almost surely, 2^51839407 is an apocalyptic number.

51839407 is a deficient number, since it is larger than the sum of its proper divisors (1).

51839407 is an equidigital number, since it uses as much as digits as its factorization.

51839407 is an odious number, because the sum of its binary digits is odd.

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

The square root of 51839407 is about 7199.9588193267. The cubic root of 51839407 is about 372.8664789584.

The spelling of 51839407 in words is "fifty-one million, eight hundred thirty-nine thousand, four hundred seven".