51193657 has 8 divisors (see below), whose sum is σ = 53962560. Its totient is φ = 48432240.

The previous prime is 51193643. The next prime is 51193663. The reversal of 51193657 is 75639115.

51193657 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 a de Polignac number, because none of the positive numbers 2^k-51193657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51193357) 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, 17307 + ... + 20047.

It is an arithmetic number, because the mean of its divisors is an integer number (6745320).

Almost surely, 2^51193657 is an apocalyptic number.

It is an amenable number.

51193657 is a deficient number, since it is larger than the sum of its proper divisors (2768903).

51193657 is a wasteful number, since it uses less digits than its factorization.

51193657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743.

The product of its digits is 28350, while the sum is 37.

The square root of 51193657 is about 7154.9742836715. The cubic root of 51193657 is about 371.3117718901.

The spelling of 51193657 in words is "fifty-one million, one hundred ninety-three thousand, six hundred fifty-seven".