51957193 has 4 divisors (see below), whose sum is σ = 52059780. Its totient is φ = 51854608.

The previous prime is 51957187. The next prime is 51957197. The reversal of 51957193 is 39175915.

51957193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43731769 + 8225424 = 6613^2 + 2868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51957193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51957197) 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 3 ways as a sum of consecutive naturals, for example, 50530 + ... + 51547.

It is an arithmetic number, because the mean of its divisors is an integer number (13014945).

Almost surely, 2^51957193 is an apocalyptic number.

It is an amenable number.

51957193 is a deficient number, since it is larger than the sum of its proper divisors (102587).

51957193 is a wasteful number, since it uses less digits than its factorization.

51957193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102586.

The product of its digits is 42525, while the sum is 40.

The square root of 51957193 is about 7208.1338084139. The cubic root of 51957193 is about 373.1486660223.

The spelling of 51957193 in words is "fifty-one million, nine hundred fifty-seven thousand, one hundred ninety-three".