51943289 has 8 divisors (see below), whose sum is σ = 52390272. Its totient is φ = 51498720.

The previous prime is 51943267. The next prime is 51943349. The reversal of 51943289 is 98234915.

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 51943289 - 2¹⁶ = 51877753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51943219) 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, 82004 + ... + 82634.

It is an arithmetic number, because the mean of its divisors is an integer number (6548784).

Almost surely, 2^51943289 is an apocalyptic number.

It is an amenable number.

51943289 is a deficient number, since it is larger than the sum of its proper divisors (446983).

51943289 is a wasteful number, since it uses less digits than its factorization.

51943289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207.

The product of its digits is 77760, while the sum is 41.

The square root of 51943289 is about 7207.1692778788. The cubic root of 51943289 is about 373.1153775809.

The spelling of 51943289 in words is "fifty-one million, nine hundred forty-three thousand, two hundred eighty-nine".