51227316 has 72 divisors (see below), whose sum is σ = 153491520. Its totient is φ = 14634432.

The previous prime is 51227303. The next prime is 51227333. The reversal of 51227316 is 61372215.

It is a happy number.

51227316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 51227316.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3040 + ... + 10568.

Almost surely, 2^51227316 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 51227316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76745760).

51227316 is an abundant number, since it is smaller than the sum of its proper divisors (102264204).

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

51227316 is a wasteful number, since it uses less digits than its factorization.

51227316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555 (or 7541 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 51227316 is about 7157.3260370057. The cubic root of 51227316 is about 371.3931312198.

The spelling of 51227316 in words is "fifty-one million, two hundred twenty-seven thousand, three hundred sixteen".