51286923 has 6 divisors (see below), whose sum is σ = 74081124. Its totient is φ = 34191276.

The previous prime is 51286897. The next prime is 51286931. The reversal of 51286923 is 32968215.

51286923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51286923 - 2¹² = 51282827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51286523) 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 in 5 ways as a sum of consecutive naturals, for example, 2849265 + ... + 2849282.

It is an arithmetic number, because the mean of its divisors is an integer number (12346854).

Almost surely, 2^51286923 is an apocalyptic number.

51286923 is a deficient number, since it is larger than the sum of its proper divisors (22794201).

51286923 is a wasteful number, since it uses less digits than its factorization.

51286923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5698553 (or 5698550 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 51286923 is about 7161.4888815106. The cubic root of 51286923 is about 371.5371237311.

The spelling of 51286923 in words is "fifty-one million, two hundred eighty-six thousand, nine hundred twenty-three".