51723012 has 48 divisors (see below), whose sum is σ = 132652800. Its totient is φ = 15555360.

The previous prime is 51722977. The next prime is 51723029. The reversal of 51723012 is 21032715.

It is a self number, because there is not a number n which added to its sum of digits gives 51723012.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16939 + ... + 19757.

It is an arithmetic number, because the mean of its divisors is an integer number (2763600).

Almost surely, 2^51723012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51723012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66326400).

51723012 is an abundant number, since it is smaller than the sum of its proper divisors (80929788).

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

51723012 is a wasteful number, since it uses less digits than its factorization.

51723012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976 (or 2974 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 51723012 is about 7191.8712446762. The cubic root of 51723012 is about 372.5872041829.

Adding to 51723012 its reverse (21032715), we get a palindrome (72755727).

The spelling of 51723012 in words is "fifty-one million, seven hundred twenty-three thousand, twelve".