51616406 has 8 divisors (see below), whose sum is σ = 79517280. Its totient is φ = 25110648.

The previous prime is 51616391. The next prime is 51616447. The reversal of 51616406 is 60461615.

51616406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348686 + ... + 348833.

It is an arithmetic number, because the mean of its divisors is an integer number (9939660).

Almost surely, 2^51616406 is an apocalyptic number.

51616406 is a deficient number, since it is larger than the sum of its proper divisors (27900874).

51616406 is a wasteful number, since it uses less digits than its factorization.

51616406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697558.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 51616406 is about 7184.4558597016. The cubic root of 51616406 is about 372.3310490072.

The spelling of 51616406 in words is "fifty-one million, six hundred sixteen thousand, four hundred six".