51409683 has 24 divisors (see below), whose sum is σ = 84678048. Its totient is φ = 29774592.

The previous prime is 51409643. The next prime is 51409691. The reversal of 51409683 is 38690415.

It is not a de Polignac number, because 51409683 - 2¹⁰ = 51408659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51409643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10935 + ... + 14912.

It is an arithmetic number, because the mean of its divisors is an integer number (3528252).

Almost surely, 2^51409683 is an apocalyptic number.

51409683 is a deficient number, since it is larger than the sum of its proper divisors (33268365).

51409683 is a wasteful number, since it uses less digits than its factorization.

51409683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25883 (or 25880 counting only the distinct ones).

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

The square root of 51409683 is about 7170.0546023026. The cubic root of 51409683 is about 371.8333237008.

The spelling of 51409683 in words is "fifty-one million, four hundred nine thousand, six hundred eighty-three".