53220336 has 160 divisors (see below), whose sum is σ = 163114560. Its totient is φ = 14794752.

The previous prime is 53220313. The next prime is 53220341. The reversal of 53220336 is 63302235.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307546 + ... + 307718.

It is an arithmetic number, because the mean of its divisors is an integer number (1019466).

Almost surely, 2^53220336 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 53220336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81557280).

53220336 is an abundant number, since it is smaller than the sum of its proper divisors (109894224).

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

53220336 is a wasteful number, since it uses less digits than its factorization.

53220336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 53220336 is about 7295.2269327280. The cubic root of 53220336 is about 376.1483871840.

The spelling of 53220336 in words is "fifty-three million, two hundred twenty thousand, three hundred thirty-six".