51750197 has 4 divisors (see below), whose sum is σ = 52522656. Its totient is φ = 50977740.

The previous prime is 51750163. The next prime is 51750217. The reversal of 51750197 is 79105715.

51750197 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51750197 - 2⁶ = 51750133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51750137) 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, 386129 + ... + 386262.

It is an arithmetic number, because the mean of its divisors is an integer number (13130664).

Almost surely, 2^51750197 is an apocalyptic number.

It is an amenable number.

51750197 is a deficient number, since it is larger than the sum of its proper divisors (772459).

51750197 is an equidigital number, since it uses as much as digits as its factorization.

51750197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772458.

The product of its (nonzero) digits is 11025, while the sum is 35.

The square root of 51750197 is about 7193.7609774026. The cubic root of 51750197 is about 372.6524685514.

The spelling of 51750197 in words is "fifty-one million, seven hundred fifty thousand, one hundred ninety-seven".