53212620 has 48 divisors (see below), whose sum is σ = 151048800. Its totient is φ = 13994496.

The previous prime is 53212603. The next prime is 53212657. The reversal of 53212620 is 2621235.

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, 1695 + ... + 10454.

It is an arithmetic number, because the mean of its divisors is an integer number (3146850).

Almost surely, 2^53212620 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 53212620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75524400).

53212620 is an abundant number, since it is smaller than the sum of its proper divisors (97836180).

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

53212620 is a wasteful number, since it uses less digits than its factorization.

53212620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12234 (or 12232 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 53212620 is about 7294.6980746293. The cubic root of 53212620 is about 376.1302080351.

Adding to 53212620 its reverse (2621235), we get a palindrome (55833855).

The spelling of 53212620 in words is "fifty-three million, two hundred twelve thousand, six hundred twenty".