51606520 has 32 divisors (see below), whose sum is σ = 132703200. Its totient is φ = 17693568.

The previous prime is 51606491. The next prime is 51606521. The reversal of 51606520 is 2560615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51606521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91875 + ... + 92434.

It is an arithmetic number, because the mean of its divisors is an integer number (4146975).

Almost surely, 2^51606520 is an apocalyptic number.

It is an amenable number.

51606520 is an abundant number, since it is smaller than the sum of its proper divisors (81096680).

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

51606520 is a wasteful number, since it uses less digits than its factorization.

51606520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184327 (or 184323 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 51606520 is about 7183.7678136198. The cubic root of 51606520 is about 372.3072768512.

The spelling of 51606520 in words is "fifty-one million, six hundred six thousand, five hundred twenty".