51190439 has 2 divisors, whose sum is σ = 51190440. Its totient is φ = 51190438.

The previous prime is 51190429. The next prime is 51190441. The reversal of 51190439 is 93409115.

51190439 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 51190439 - 2¹⁶ = 51124903 is a prime.

It is a super-2 number, since 2×51190439² = 5240922090025442, which contains 22 as substring.

Together with 51190441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51190409) 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, 25595219 + 25595220.

It is an arithmetic number, because the mean of its divisors is an integer number (25595220).

Almost surely, 2^51190439 is an apocalyptic number.

51190439 is a deficient number, since it is larger than the sum of its proper divisors (1).

51190439 is an equidigital number, since it uses as much as digits as its factorization.

51190439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 51190439 is about 7154.7494016213. The cubic root of 51190439 is about 371.3039915882.

The spelling of 51190439 in words is "fifty-one million, one hundred ninety thousand, four hundred thirty-nine".