51937647 has 8 divisors (see below), whose sum is σ = 69922944. Its totient is φ = 34288728.

The previous prime is 51937631. The next prime is 51937649. The reversal of 51937647 is 74673915.

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

It is not a de Polignac number, because 51937647 - 2⁴ = 51937631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51937599 and 51937608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51937649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83733 + ... + 84350.

It is an arithmetic number, because the mean of its divisors is an integer number (8740368).

Almost surely, 2^51937647 is an apocalyptic number.

51937647 is a deficient number, since it is larger than the sum of its proper divisors (17985297).

51937647 is a wasteful number, since it uses less digits than its factorization.

51937647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168189.

The product of its digits is 158760, while the sum is 42.

The square root of 51937647 is about 7206.7778514396. Note that the first 3 decimals coincide. The cubic root of 51937647 is about 373.1018680193.

The spelling of 51937647 in words is "fifty-one million, nine hundred thirty-seven thousand, six hundred forty-seven".