51645124 has 6 divisors (see below), whose sum is σ = 90378974. Its totient is φ = 25822560.

The previous prime is 51645109. The next prime is 51645131. The reversal of 51645124 is 42154615.

It can be written as a sum of positive squares in only one way, i.e., 32285124 + 19360000 = 5682^2 + 4400^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51645092 and 51645101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6455637 + ... + 6455644.

Almost surely, 2^51645124 is an apocalyptic number.

It is an amenable number.

51645124 is a deficient number, since it is larger than the sum of its proper divisors (38733850).

51645124 is a wasteful number, since it uses less digits than its factorization.

51645124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12911285 (or 12911283 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 51645124 is about 7186.4542021779. The cubic root of 51645124 is about 372.4000879135.

Adding to 51645124 its reverse (42154615), we get a palindrome (93799739).

The spelling of 51645124 in words is "fifty-one million, six hundred forty-five thousand, one hundred twenty-four".