51543532 has 12 divisors (see below), whose sum is σ = 91094976. Its totient is φ = 25516400.

The previous prime is 51543517. The next prime is 51543533. The reversal of 51543532 is 23534515.

It is a self number, because there is not a number n which added to its sum of digits gives 51543532.

It is not an unprimeable number, because it can be changed into a prime (51543533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63388 + ... + 64195.

It is an arithmetic number, because the mean of its divisors is an integer number (7591248).

Almost surely, 2^51543532 is an apocalyptic number.

It is an amenable number.

51543532 is a deficient number, since it is larger than the sum of its proper divisors (39551444).

51543532 is a wasteful number, since it uses less digits than its factorization.

51543532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127688 (or 127686 counting only the distinct ones).

The product of its digits is 9000, while the sum is 28.

The square root of 51543532 is about 7179.3824246936. The cubic root of 51543532 is about 372.1557427803.

The spelling of 51543532 in words is "fifty-one million, five hundred forty-three thousand, five hundred thirty-two".