51505600 has 42 divisors (see below), whose sum is σ = 126739904. Its totient is φ = 20601600.

The previous prime is 51505549. The next prime is 51505603. The reversal of 51505600 is 650515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51505603) 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 5 ways as a sum of consecutive naturals, for example, 14496 + ... + 17695.

Almost surely, 2^51505600 is an apocalyptic number.

51505600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51505600 is an abundant number, since it is smaller than the sum of its proper divisors (75234304).

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

51505600 is a wasteful number, since it uses less digits than its factorization.

51505600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32213 (or 32198 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 51505600 is about 7176.7402070857. The cubic root of 51505600 is about 372.0644278897.

The spelling of 51505600 in words is "fifty-one million, five hundred five thousand, six hundred".