51897229 has 8 divisors (see below), whose sum is σ = 53125632. Its totient is φ = 50678160.

The previous prime is 51897221. The next prime is 51897289. The reversal of 51897229 is 92279815.

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 51897229 - 2³ = 51897221 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 (51897221) 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, 9624 + ... + 14014.

It is an arithmetic number, because the mean of its divisors is an integer number (6640704).

Almost surely, 2^51897229 is an apocalyptic number.

It is an amenable number.

51897229 is a deficient number, since it is larger than the sum of its proper divisors (1228403).

51897229 is a wasteful number, since it uses less digits than its factorization.

51897229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4667.

The product of its digits is 90720, while the sum is 43.

The square root of 51897229 is about 7203.9731398722. The cubic root of 51897229 is about 373.0050599835.

The spelling of 51897229 in words is "fifty-one million, eight hundred ninety-seven thousand, two hundred twenty-nine".