51193730 has 48 divisors (see below), whose sum is σ = 107951616. Its totient is φ = 17428320.

The previous prime is 51193717. The next prime is 51193757. The reversal of 51193730 is 3739115.

It is a junction number, because it is equal to n+sod(n) for n = 51193693 and 51193702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93317 + ... + 93863.

It is an arithmetic number, because the mean of its divisors is an integer number (2248992).

Almost surely, 2^51193730 is an apocalyptic number.

51193730 is an abundant number, since it is smaller than the sum of its proper divisors (56757886).

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

51193730 is a wasteful number, since it uses less digits than its factorization.

51193730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 51193730 is about 7154.9793850157. The cubic root of 51193730 is about 371.3119483817.

The spelling of 51193730 in words is "fifty-one million, one hundred ninety-three thousand, seven hundred thirty".