51730737 has 8 divisors (see below), whose sum is σ = 69013536. Its totient is φ = 34467552.

The previous prime is 51730733. The next prime is 51730741. The reversal of 51730737 is 73703715.

It is an interprime number because it is at equal distance from previous prime (51730733) and next prime (51730741).

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

It is not a de Polignac number, because 51730737 - 2² = 51730733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51730698 and 51730707.

It is not an unprimeable number, because it can be changed into a prime (51730733) 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, 3138 + ... + 10644.

It is an arithmetic number, because the mean of its divisors is an integer number (8626692).

Almost surely, 2^51730737 is an apocalyptic number.

It is an amenable number.

51730737 is a deficient number, since it is larger than the sum of its proper divisors (17282799).

51730737 is a wasteful number, since it uses less digits than its factorization.

51730737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9807.

The product of its (nonzero) digits is 15435, while the sum is 33.

The square root of 51730737 is about 7192.4082893006. The cubic root of 51730737 is about 372.6057522963.

The spelling of 51730737 in words is "fifty-one million, seven hundred thirty thousand, seven hundred thirty-seven".