51651124 has 12 divisors (see below), whose sum is σ = 103302304. Its totient is φ = 22136184.

The previous prime is 51651121. The next prime is 51651133. The reversal of 51651124 is 42115615.

It is a happy number.

51651124 is nontrivially palindromic in base 15.

51651124 is an admirable number.

It is a super-2 number, since 2×51651124² = 5335677220926752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51651121) 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, 922314 + ... + 922369.

Almost surely, 2^51651124 is an apocalyptic number.

It is an amenable number.

51651124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51651124 is a wasteful number, since it uses less digits than its factorization.

51651124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844694 (or 1844692 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 51651124 is about 7186.8716420985. The cubic root of 51651124 is about 372.4145088554.

Adding to 51651124 its reverse (42115615), we get a palindrome (93766739).

The spelling of 51651124 in words is "fifty-one million, six hundred fifty-one thousand, one hundred twenty-four".