51449173 has 4 divisors (see below), whose sum is σ = 51790048. Its totient is φ = 51108300.

The previous prime is 51449171. The next prime is 51449197. The reversal of 51449173 is 37194415.

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 51449173 - 2¹ = 51449171 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 (51449171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170211 + ... + 170512.

It is an arithmetic number, because the mean of its divisors is an integer number (12947512).

Almost surely, 2^51449173 is an apocalyptic number.

It is an amenable number.

51449173 is a deficient number, since it is larger than the sum of its proper divisors (340875).

51449173 is a wasteful number, since it uses less digits than its factorization.

51449173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340874.

The product of its digits is 15120, while the sum is 34.

The square root of 51449173 is about 7172.8078881286. The cubic root of 51449173 is about 371.9285064172.

The spelling of 51449173 in words is "fifty-one million, four hundred forty-nine thousand, one hundred seventy-three".