51169739 has 2 divisors, whose sum is σ = 51169740. Its totient is φ = 51169738.

The previous prime is 51169663. The next prime is 51169753. The reversal of 51169739 is 93796115.

51169739 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 51169739 - 2¹⁶ = 51104203 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51169696 and 51169705.

It is not a weakly prime, because it can be changed into another prime (51169759) 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, 25584869 + 25584870.

It is an arithmetic number, because the mean of its divisors is an integer number (25584870).

Almost surely, 2^51169739 is an apocalyptic number.

51169739 is a deficient number, since it is larger than the sum of its proper divisors (1).

51169739 is an equidigital number, since it uses as much as digits as its factorization.

51169739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 41.

The square root of 51169739 is about 7153.3026638050. The cubic root of 51169739 is about 371.2539364802.

The spelling of 51169739 in words is "fifty-one million, one hundred sixty-nine thousand, seven hundred thirty-nine".