51150012 has 24 divisors (see below), whose sum is σ = 120293376. Its totient is φ = 16915248.

The previous prime is 51149993. The next prime is 51150013. The reversal of 51150012 is 21005115.

It is a junction number, because it is equal to n+sod(n) for n = 51149973 and 51150000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51150013) 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, 15258 + ... + 18305.

It is an arithmetic number, because the mean of its divisors is an integer number (5012224).

Almost surely, 2^51150012 is an apocalyptic number.

It is an amenable number.

51150012 is an abundant number, since it is smaller than the sum of its proper divisors (69143364).

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

51150012 is a wasteful number, since it uses less digits than its factorization.

51150012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33697 (or 33695 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 51150012 is about 7151.9236573107. The cubic root of 51150012 is about 371.2062216400.

Adding to 51150012 its reverse (21005115), we get a palindrome (72155127).

The spelling of 51150012 in words is "fifty-one million, one hundred fifty thousand, twelve".