51308408 has 8 divisors (see below), whose sum is σ = 96203280. Its totient is φ = 25654200.

The previous prime is 51308401. The next prime is 51308419. The reversal of 51308408 is 80480315.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51308401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3206768 + ... + 3206783.

It is an arithmetic number, because the mean of its divisors is an integer number (12025410).

Almost surely, 2^51308408 is an apocalyptic number.

It is an amenable number.

51308408 is a deficient number, since it is larger than the sum of its proper divisors (44894872).

51308408 is a wasteful number, since it uses less digits than its factorization.

51308408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6413557 (or 6413553 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 51308408 is about 7162.9887616832. The cubic root of 51308408 is about 371.5889976477.

The spelling of 51308408 in words is "fifty-one million, three hundred eight thousand, four hundred eight".