51730692 has 96 divisors (see below), whose sum is σ = 141496320. Its totient is φ = 14567040.

The previous prime is 51730687. The next prime is 51730697. The reversal of 51730692 is 29603715.

It is an interprime number because it is at equal distance from previous prime (51730687) and next prime (51730697).

It is not an unprimeable number, because it can be changed into a prime (51730697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91603 + ... + 92165.

It is an arithmetic number, because the mean of its divisors is an integer number (1473920).

Almost surely, 2^51730692 is an apocalyptic number.

51730692 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51730692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70748160).

51730692 is an abundant number, since it is smaller than the sum of its proper divisors (89765628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51730692 is a wasteful number, since it uses less digits than its factorization.

51730692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 51730692 is about 7192.4051610014. The cubic root of 51730692 is about 372.6056442544.

The spelling of 51730692 in words is "fifty-one million, seven hundred thirty thousand, six hundred ninety-two".