51039236 has 24 divisors (see below), whose sum is σ = 95087160. Its totient is φ = 23887872.

The previous prime is 51039229. The next prime is 51039251. The reversal of 51039236 is 63293015.

It can be written as a sum of positive squares in 4 ways, for example, as 12673600 + 38365636 = 3560^2 + 6194^2 .

It is a super-2 number, since 2×51039236² = 5210007222927392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51039199 and 51039208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11180 + ... + 15068.

It is an arithmetic number, because the mean of its divisors is an integer number (3961965).

Almost surely, 2^51039236 is an apocalyptic number.

It is an amenable number.

51039236 is a deficient number, since it is larger than the sum of its proper divisors (44047924).

51039236 is a wasteful number, since it uses less digits than its factorization.

51039236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103 (or 4101 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 51039236 is about 7144.1749698618. The cubic root of 51039236 is about 370.9380531702.

The spelling of 51039236 in words is "fifty-one million, thirty-nine thousand, two hundred thirty-six".