51606330 has 16 divisors (see below), whose sum is σ = 123855264. Its totient is φ = 13761680.

The previous prime is 51606311. The next prime is 51606343. The reversal of 51606330 is 3360615.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 51606330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860076 + ... + 860135.

It is an arithmetic number, because the mean of its divisors is an integer number (7740954).

Almost surely, 2^51606330 is an apocalyptic number.

51606330 is an abundant number, since it is smaller than the sum of its proper divisors (72248934).

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

51606330 is a wasteful number, since it uses less digits than its factorization.

51606330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720221.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 51606330 is about 7183.7545893495. The cubic root of 51606330 is about 372.3068199420.

Adding to 51606330 its reverse (3360615), we get a palindrome (54966945).

The spelling of 51606330 in words is "fifty-one million, six hundred six thousand, three hundred thirty".