51698773 has 6 divisors (see below), whose sum is σ = 60139446. Its totient is φ = 44313192.

The previous prime is 51698749. The next prime is 51698789. The reversal of 51698773 is 37789615.

51698773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 51581124 + 117649 = 7182^2 + 343^2 .

It is not a de Polignac number, because 51698773 - 2¹³ = 51690581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51695773) 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, 527490 + ... + 527587.

It is an arithmetic number, because the mean of its divisors is an integer number (10023241).

Almost surely, 2^51698773 is an apocalyptic number.

It is an amenable number.

51698773 is a deficient number, since it is larger than the sum of its proper divisors (8440673).

51698773 is a wasteful number, since it uses less digits than its factorization.

51698773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055091 (or 1055084 counting only the distinct ones).

The product of its digits is 317520, while the sum is 46.

The square root of 51698773 is about 7190.1858807683. The cubic root of 51698773 is about 372.5289931339.

The spelling of 51698773 in words is "fifty-one million, six hundred ninety-eight thousand, seven hundred seventy-three".