53211020 has 48 divisors (see below), whose sum is σ = 124558560. Its totient is φ = 18975744.

The previous prime is 53211013. The next prime is 53211031. The reversal of 53211020 is 2011235.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 53210986 and 53211004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2342 + ... + 10578.

It is an arithmetic number, because the mean of its divisors is an integer number (2594970).

Almost surely, 2^53211020 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 53211020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62279280).

53211020 is an abundant number, since it is smaller than the sum of its proper divisors (71347540).

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

53211020 is a wasteful number, since it uses less digits than its factorization.

53211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8282 (or 8280 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 53211020 is about 7294.5884051124. The cubic root of 53211020 is about 376.1264381627.

Adding to 53211020 its reverse (2011235), we get a palindrome (55222255).

The spelling of 53211020 in words is "fifty-three million, two hundred eleven thousand, twenty".