51701189 has 4 divisors (see below), whose sum is σ = 52073280. Its totient is φ = 51329100.

The previous prime is 51701161. The next prime is 51701227. The reversal of 51701189 is 98110715.

51701189 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, and also an emirpimes, since its reverse is a distinct semiprime: 98110715 = 5 ⋅19622143.

It is a cyclic number.

It is not a de Polignac number, because 51701189 - 2¹⁶ = 51635653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51701389) 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, 185837 + ... + 186114.

It is an arithmetic number, because the mean of its divisors is an integer number (13018320).

Almost surely, 2^51701189 is an apocalyptic number.

It is an amenable number.

51701189 is a deficient number, since it is larger than the sum of its proper divisors (372091).

51701189 is a wasteful number, since it uses less digits than its factorization.

51701189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372090.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 51701189 is about 7190.3538855887. The cubic root of 51701189 is about 372.5347960829.

The spelling of 51701189 in words is "fifty-one million, seven hundred one thousand, one hundred eighty-nine".