51989122 has 8 divisors (see below), whose sum is σ = 78106896. Its totient is φ = 25953492.

The previous prime is 51989117. The next prime is 51989123. The reversal of 51989122 is 22198915.

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

It is not an unprimeable number, because it can be changed into a prime (51989123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18928 + ... + 21499.

It is an arithmetic number, because the mean of its divisors is an integer number (9763362).

Almost surely, 2^51989122 is an apocalyptic number.

51989122 is a deficient number, since it is larger than the sum of its proper divisors (26117774).

51989122 is a wasteful number, since it uses less digits than its factorization.

51989122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41072.

The product of its digits is 12960, while the sum is 37.

The square root of 51989122 is about 7210.3482578860. The cubic root of 51989122 is about 373.2250867792.

The spelling of 51989122 in words is "fifty-one million, nine hundred eighty-nine thousand, one hundred twenty-two".