51001312 has 24 divisors (see below), whose sum is σ = 100926000. Its totient is φ = 25369344.

The previous prime is 51001303. The next prime is 51001367. The reversal of 51001312 is 21310015.

It is a super-2 number, since 2×51001312² = 5202267651442688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51001292 and 51001301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2364 + ... + 10372.

It is an arithmetic number, because the mean of its divisors is an integer number (4205250).

Almost surely, 2^51001312 is an apocalyptic number.

It is an amenable number.

51001312 is a deficient number, since it is larger than the sum of its proper divisors (49924688).

51001312 is a wasteful number, since it uses less digits than its factorization.

51001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8218 (or 8210 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 51001312 is about 7141.5202863256. The cubic root of 51001312 is about 370.8461569385.

Adding to 51001312 its reverse (21310015), we get a palindrome (72311327).

The spelling of 51001312 in words is "fifty-one million, one thousand, three hundred twelve".