53313228 has 84 divisors (see below), whose sum is σ = 143226720. Its totient is φ = 17348256.

The previous prime is 53313209. The next prime is 53313233. The reversal of 53313228 is 82231335.

53313228 is a `hidden beast` number, since 5 + 331 + 322 + 8 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 136858 + ... + 137246.

It is an arithmetic number, because the mean of its divisors is an integer number (1705080).

Almost surely, 2^53313228 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 53313228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71613360).

53313228 is an abundant number, since it is smaller than the sum of its proper divisors (89913492).

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

53313228 is a wasteful number, since it uses less digits than its factorization.

53313228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 441 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 53313228 is about 7301.5907855754. The cubic root of 53313228 is about 376.3671060000.

The spelling of 53313228 in words is "fifty-three million, three hundred thirteen thousand, two hundred twenty-eight".