51601716 has 36 divisors (see below), whose sum is σ = 130927524. Its totient is φ = 17136000.

The previous prime is 51601703. The next prime is 51601721. The reversal of 51601716 is 61710615.

51601716 is a `hidden beast` number, since 51 + 601 + 7 + 1 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11532816 + 40068900 = 3396^2 + 6330^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 51601716.

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 in 11 ways as a sum of consecutive naturals, for example, 7566 + ... + 12666.

Almost surely, 2^51601716 is an apocalyptic number.

It is an amenable number.

51601716 is an abundant number, since it is smaller than the sum of its proper divisors (79325808).

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

51601716 is a wasteful number, since it uses less digits than its factorization.

51601716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5392 (or 5387 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 51601716 is about 7183.4334409111. The cubic root of 51601716 is about 372.2957239204.

The spelling of 51601716 in words is "fifty-one million, six hundred one thousand, seven hundred sixteen".