51549289 has 8 divisors (see below), whose sum is σ = 56793600. Its totient is φ = 46398000.

The previous prime is 51549257. The next prime is 51549293. The reversal of 51549289 is 98294515.

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

It is not a de Polignac number, because 51549289 - 2⁵ = 51549257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51549229) 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 7 ways as a sum of consecutive naturals, for example, 22089 + ... + 24310.

It is an arithmetic number, because the mean of its divisors is an integer number (7099200).

Almost surely, 2^51549289 is an apocalyptic number.

It is an amenable number.

51549289 is a deficient number, since it is larger than the sum of its proper divisors (5244311).

51549289 is a wasteful number, since it uses less digits than its factorization.

51549289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46511.

The product of its digits is 129600, while the sum is 43.

The square root of 51549289 is about 7179.7833532775. The cubic root of 51549289 is about 372.1695978705.

The spelling of 51549289 in words is "fifty-one million, five hundred forty-nine thousand, two hundred eighty-nine".