51020316 has 36 divisors (see below), whose sum is σ = 130791024. Its totient is φ = 16766400.

The previous prime is 51020303. The next prime is 51020323. The reversal of 51020316 is 61302015.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7425 + ... + 12536.

It is an arithmetic number, because the mean of its divisors is an integer number (3633084).

Almost surely, 2^51020316 is an apocalyptic number.

It is an amenable number.

51020316 is an abundant number, since it is smaller than the sum of its proper divisors (79770708).

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

51020316 is a wasteful number, since it uses less digits than its factorization.

51020316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20042 (or 20037 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 51020316 is about 7142.8506914257. The cubic root of 51020316 is about 370.8922125197.

The spelling of 51020316 in words is "fifty-one million, twenty thousand, three hundred sixteen".