51021116 has 6 divisors (see below), whose sum is σ = 89286960. Its totient is φ = 25510556.

The previous prime is 51021109. The next prime is 51021143. The reversal of 51021116 is 61112015.

It is a junction number, because it is equal to n+sod(n) for n = 51021094 and 51021103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6377636 + ... + 6377643.

It is an arithmetic number, because the mean of its divisors is an integer number (14881160).

Almost surely, 2^51021116 is an apocalyptic number.

It is an amenable number.

51021116 is a deficient number, since it is larger than the sum of its proper divisors (38265844).

51021116 is a wasteful number, since it uses less digits than its factorization.

51021116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12755283 (or 12755281 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 51021116 is about 7142.9066912567. The cubic root of 51021116 is about 370.8941510430.

The spelling of 51021116 in words is "fifty-one million, twenty-one thousand, one hundred sixteen".