51308438 has 8 divisors (see below), whose sum is σ = 77018688. Its totient is φ = 25635544.

The previous prime is 51308419. The next prime is 51308447. The reversal of 51308438 is 83480315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5606 + ... + 11577.

It is an arithmetic number, because the mean of its divisors is an integer number (9627336).

Almost surely, 2^51308438 is an apocalyptic number.

51308438 is a deficient number, since it is larger than the sum of its proper divisors (25710250).

51308438 is a wasteful number, since it uses less digits than its factorization.

51308438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18678.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 51308438 is about 7162.9908557808. The cubic root of 51308438 is about 371.5890700703.

The spelling of 51308438 in words is "fifty-one million, three hundred eight thousand, four hundred thirty-eight".