51023512 has 16 divisors (see below), whose sum is σ = 100704600. Its totient is φ = 24168960.

The previous prime is 51023509. The next prime is 51023519. The reversal of 51023512 is 21532015.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 51023512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51023519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167689 + ... + 167992.

Almost surely, 2^51023512 is an apocalyptic number.

It is an amenable number.

51023512 is a deficient number, since it is larger than the sum of its proper divisors (49681088).

51023512 is a wasteful number, since it uses less digits than its factorization.

51023512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335706 (or 335702 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51023512 is about 7143.0744081243. The cubic root of 51023512 is about 370.8999567992.

Adding to 51023512 its reverse (21532015), we get a palindrome (72555527).

The spelling of 51023512 in words is "fifty-one million, twenty-three thousand, five hundred twelve".