51772776 has 64 divisors (see below), whose sum is σ = 143354880. Its totient is φ = 15449280.

The previous prime is 51772771. The next prime is 51772781. The reversal of 51772776 is 67727715.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51772771) and next prime (51772781).

It is not an unprimeable number, because it can be changed into a prime (51772771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16225 + ... + 19151.

It is an arithmetic number, because the mean of its divisors is an integer number (2239920).

Almost surely, 2^51772776 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 51772776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71677440).

51772776 is an abundant number, since it is smaller than the sum of its proper divisors (91582104).

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

51772776 is a wasteful number, since it uses less digits than its factorization.

51772776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014 (or 3010 counting only the distinct ones).

The product of its digits is 144060, while the sum is 42.

The square root of 51772776 is about 7195.3301522585. The cubic root of 51772776 is about 372.7066576957.

The spelling of 51772776 in words is "fifty-one million, seven hundred seventy-two thousand, seven hundred seventy-six".