53220888 has 96 divisors (see below), whose sum is σ = 170876160. Its totient is φ = 15202080.

The previous prime is 53220883. The next prime is 53220889. The reversal of 53220888 is 88802235.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53220883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11653 + ... + 15563.

It is an arithmetic number, because the mean of its divisors is an integer number (1779960).

Almost surely, 2^53220888 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 53220888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85438080).

53220888 is an abundant number, since it is smaller than the sum of its proper divisors (117655272).

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

53220888 is a wasteful number, since it uses less digits than its factorization.

53220888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939 (or 3923 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 53220888 is about 7295.2647655860. The cubic root of 53220888 is about 376.1496876467.

The spelling of 53220888 in words is "fifty-three million, two hundred twenty thousand, eight hundred eighty-eight".