51543012 has 24 divisors (see below), whose sum is σ = 120539776. Its totient is φ = 17142048.

The previous prime is 51543001. The next prime is 51543013. The reversal of 51543012 is 21034515.

It is a self number, because there is not a number n which added to its sum of digits gives 51543012.

It is not an unprimeable number, because it can be changed into a prime (51543013) 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, 918 + ... + 10194.

Almost surely, 2^51543012 is an apocalyptic number.

It is an amenable number.

51543012 is an abundant number, since it is smaller than the sum of its proper divisors (68996764).

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

51543012 is a wasteful number, since it uses less digits than its factorization.

51543012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747 (or 9745 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51543012 is about 7179.3462097882. The cubic root of 51543012 is about 372.1544912710.

Adding to 51543012 its reverse (21034515), we get a palindrome (72577527).

The spelling of 51543012 in words is "fifty-one million, five hundred forty-three thousand, twelve".