51511016 has 8 divisors (see below), whose sum is σ = 96583170. Its totient is φ = 25755504.

The previous prime is 51510959. The next prime is 51511039. The reversal of 51511016 is 61011515.

It can be written as a sum of positive squares in only one way, i.e., 45508516 + 6002500 = 6746^2 + 2450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3219431 + ... + 3219446.

Almost surely, 2^51511016 is an apocalyptic number.

It is an amenable number.

51511016 is a deficient number, since it is larger than the sum of its proper divisors (45072154).

51511016 is a wasteful number, since it uses less digits than its factorization.

51511016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6438883 (or 6438879 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 51511016 is about 7177.1175272528. The cubic root of 51511016 is about 372.0774687391.

The spelling of 51511016 in words is "fifty-one million, five hundred eleven thousand, sixteen".