53771228 has 36 divisors (see below), whose sum is σ = 109999512. Its totient is φ = 22932000.

The previous prime is 53771227. The next prime is 53771231. The reversal of 53771228 is 82217735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53771227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48650 + ... + 49742.

It is an arithmetic number, because the mean of its divisors is an integer number (3055542).

Almost surely, 2^53771228 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 53771228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54999756).

53771228 is an abundant number, since it is smaller than the sum of its proper divisors (56228284).

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

53771228 is a wasteful number, since it uses less digits than its factorization.

53771228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362 (or 1353 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 53771228 is about 7332.8867439774. The cubic root of 53771228 is about 377.4417915309.

The spelling of 53771228 in words is "fifty-three million, seven hundred seventy-one thousand, two hundred twenty-eight".