51201606 has 8 divisors (see below), whose sum is σ = 102403224. Its totient is φ = 17067200.

The previous prime is 51201589. The next prime is 51201613. The reversal of 51201606 is 60610215.

It is a happy number.

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

51201606 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 4266795 + ... + 4266806.

It is an arithmetic number, because the mean of its divisors is an integer number (12800403).

Almost surely, 2^51201606 is an apocalyptic number.

51201606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51201606 is a wasteful number, since it uses less digits than its factorization.

51201606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8533606.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 51201606 is about 7155.5297497809. The cubic root of 51201606 is about 371.3309891441.

The spelling of 51201606 in words is "fifty-one million, two hundred one thousand, six hundred six".