51190393 has 8 divisors (see below), whose sum is σ = 52993280. Its totient is φ = 49397040.

The previous prime is 51190369. The next prime is 51190409. The reversal of 51190393 is 39309115.

51190393 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 cyclic number.

It is not a de Polignac number, because 51190393 - 2¹⁷ = 51059321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51190093) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9571 + ... + 13927.

It is an arithmetic number, because the mean of its divisors is an integer number (6624160).

Almost surely, 2^51190393 is an apocalyptic number.

It is an amenable number.

51190393 is a deficient number, since it is larger than the sum of its proper divisors (1802887).

51190393 is a wasteful number, since it uses less digits than its factorization.

51190393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4767.

The product of its (nonzero) digits is 3645, while the sum is 31.

The square root of 51190393 is about 7154.7461869727. The cubic root of 51190393 is about 371.3038803696.

The spelling of 51190393 in words is "fifty-one million, one hundred ninety thousand, three hundred ninety-three".