51543606 has 16 divisors (see below), whose sum is σ = 103462704. Its totient is φ = 17118624.

The previous prime is 51543559. The next prime is 51543617. The reversal of 51543606 is 60634515.

It is a Curzon number.

It is a congruent number.

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, 13845 + ... + 17168.

It is an arithmetic number, because the mean of its divisors is an integer number (6466419).

Almost surely, 2^51543606 is an apocalyptic number.

51543606 is an abundant number, since it is smaller than the sum of its proper divisors (51919098).

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

51543606 is a wasteful number, since it uses less digits than its factorization.

51543606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31295.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 51543606 is about 7179.3875783384. The cubic root of 51543606 is about 372.1559208790.

Subtracting 51543606 from its reverse (60634515), we obtain a palindrome (9090909).

The spelling of 51543606 in words is "fifty-one million, five hundred forty-three thousand, six hundred six".