53513236 has 48 divisors (see below), whose sum is σ = 112694400. Its totient is φ = 21748608.

The previous prime is 53513233. The next prime is 53513237. The reversal of 53513236 is 63231535.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53513233) 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, 47350 + ... + 48466.

It is an arithmetic number, because the mean of its divisors is an integer number (2347800).

Almost surely, 2^53513236 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 53513236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56347200).

53513236 is an abundant number, since it is smaller than the sum of its proper divisors (59181164).

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

53513236 is a wasteful number, since it uses less digits than its factorization.

53513236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216 (or 1214 counting only the distinct ones).

The product of its digits is 8100, while the sum is 28.

The square root of 53513236 is about 7315.2741575419. The cubic root of 53513236 is about 376.8371737854.

The spelling of 53513236 in words is "fifty-three million, five hundred thirteen thousand, two hundred thirty-six".