53122220 has 48 divisors (see below), whose sum is σ = 117669888. Its totient is φ = 20114880.

The previous prime is 53122219. The next prime is 53122247. The reversal of 53122220 is 2222135.

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, 28229 + ... + 30051.

It is an arithmetic number, because the mean of its divisors is an integer number (2451456).

Almost surely, 2^53122220 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 53122220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58834944).

53122220 is an abundant number, since it is smaller than the sum of its proper divisors (64547668).

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

53122220 is a wasteful number, since it uses less digits than its factorization.

53122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1908 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 53122220 is about 7288.4991596350. The cubic root of 53122220 is about 375.9170916491.

Adding to 53122220 its reverse (2222135), we get a palindrome (55344355).

The spelling of 53122220 in words is "fifty-three million, one hundred twenty-two thousand, two hundred twenty".