51730190 has 8 divisors (see below), whose sum is σ = 93114360. Its totient is φ = 20692072.

The previous prime is 51730183. The next prime is 51730207. The reversal of 51730190 is 9103715.

51730190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×51730190² = 5352025114872200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2586500 + ... + 2586519.

It is an arithmetic number, because the mean of its divisors is an integer number (11639295).

Almost surely, 2^51730190 is an apocalyptic number.

51730190 is a deficient number, since it is larger than the sum of its proper divisors (41384170).

51730190 is a wasteful number, since it uses less digits than its factorization.

51730190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173026.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 51730190 is about 7192.3702629940. The cubic root of 51730190 is about 372.6044389826.

The spelling of 51730190 in words is "fifty-one million, seven hundred thirty thousand, one hundred ninety".