51704189 has 4 divisors (see below), whose sum is σ = 52906656. Its totient is φ = 50501724.

The previous prime is 51704173. The next prime is 51704197. The reversal of 51704189 is 98140715.

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 51704189 - 2⁴ = 51704173 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 (51704489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601169 + ... + 601254.

It is an arithmetic number, because the mean of its divisors is an integer number (13226664).

Almost surely, 2^51704189 is an apocalyptic number.

It is an amenable number.

51704189 is a deficient number, since it is larger than the sum of its proper divisors (1202467).

51704189 is a wasteful number, since it uses less digits than its factorization.

51704189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202466.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 51704189 is about 7190.5624953824. The cubic root of 51704189 is about 372.5420014799.

The spelling of 51704189 in words is "fifty-one million, seven hundred four thousand, one hundred eighty-nine".