52211520 has 112 divisors (see below), whose sum is σ = 184221120. Its totient is φ = 13920768.

The previous prime is 52211507. The next prime is 52211521. The reversal of 52211520 is 2511225.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 52211493 and 52211502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52211521) 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, 5619 + ... + 11661.

Almost surely, 2^52211520 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 52211520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92110560).

52211520 is an abundant number, since it is smaller than the sum of its proper divisors (132009600).

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

52211520 is a wasteful number, since it uses less digits than its factorization.

52211520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069 (or 6053 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 52211520 is about 7225.7539399014. The cubic root of 52211520 is about 373.7565212525.

Adding to 52211520 its reverse (2511225), we get a palindrome (54722745).

The spelling of 52211520 in words is "fifty-two million, two hundred eleven thousand, five hundred twenty".