51601606 has 64 divisors (see below), whose sum is σ = 98496000. Its totient is φ = 20194272.

The previous prime is 51601603. The next prime is 51601609. The reversal of 51601606 is 60610615.

It is an interprime number because it is at equal distance from previous prime (51601603) and next prime (51601609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51601601) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 482205 + ... + 482311.

It is an arithmetic number, because the mean of its divisors is an integer number (1539000).

Almost surely, 2^51601606 is an apocalyptic number.

51601606 is a deficient number, since it is larger than the sum of its proper divisors (46894394).

51601606 is a wasteful number, since it uses less digits than its factorization.

51601606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 51601606 is about 7183.4257844012. The cubic root of 51601606 is about 372.2954593778.

Subtracting 51601606 from its reverse (60610615), we obtain a palindrome (9009009).

The spelling of 51601606 in words is "fifty-one million, six hundred one thousand, six hundred six".