51543601 has 8 divisors (see below), whose sum is σ = 52895304. Its totient is φ = 50196480.

The previous prime is 51543559. The next prime is 51543617. The reversal of 51543601 is 10634515.

51543601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5290000 + 46253601 = 2300^2 + 6801^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51543601 - 2¹³ = 51535409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51543641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41745 + ... + 42961.

It is an arithmetic number, because the mean of its divisors is an integer number (6611913).

Almost surely, 2^51543601 is an apocalyptic number.

It is an amenable number.

51543601 is a deficient number, since it is larger than the sum of its proper divisors (1351703).

51543601 is a wasteful number, since it uses less digits than its factorization.

51543601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291.

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

The square root of 51543601 is about 7179.3872301193. The cubic root of 51543601 is about 372.1559088453.

The spelling of 51543601 in words is "fifty-one million, five hundred forty-three thousand, six hundred one".