51485923 has 2 divisors, whose sum is σ = 51485924. Its totient is φ = 51485922.

The previous prime is 51485909. The next prime is 51485957. The reversal of 51485923 is 32958415.

51485923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51485923 - 2¹³ = 51477731 is a prime.

It is not a weakly prime, because it can be changed into another prime (51485963) 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, 25742961 + 25742962.

It is an arithmetic number, because the mean of its divisors is an integer number (25742962).

Almost surely, 2^51485923 is an apocalyptic number.

51485923 is a deficient number, since it is larger than the sum of its proper divisors (1).

51485923 is an equidigital number, since it uses as much as digits as its factorization.

51485923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 37.

The square root of 51485923 is about 7175.3691891080. The cubic root of 51485923 is about 372.0170411702.

The spelling of 51485923 in words is "fifty-one million, four hundred eighty-five thousand, nine hundred twenty-three".