51897173 has 8 divisors (see below), whose sum is σ = 53215008. Its totient is φ = 50584464.

The previous prime is 51897169. The next prime is 51897191. The reversal of 51897173 is 37179815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51897173 - 2² = 51897169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51897173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51897143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26711 + ... + 28587.

It is an arithmetic number, because the mean of its divisors is an integer number (6651876).

Almost surely, 2^51897173 is an apocalyptic number.

It is an amenable number.

51897173 is a deficient number, since it is larger than the sum of its proper divisors (1317835).

51897173 is a wasteful number, since it uses less digits than its factorization.

51897173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563.

The product of its digits is 52920, while the sum is 41.

The square root of 51897173 is about 7203.9692531271. The cubic root of 51897173 is about 373.0049258191.

The spelling of 51897173 in words is "fifty-one million, eight hundred ninety-seven thousand, one hundred seventy-three".