53345220 has 24 divisors (see below), whose sum is σ = 149366784. Its totient is φ = 14225376.

The previous prime is 53345219. The next prime is 53345251. The reversal of 53345220 is 2254335.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444484 + ... + 444603.

It is an arithmetic number, because the mean of its divisors is an integer number (6223616).

Almost surely, 2^53345220 is an apocalyptic number.

It is an amenable number.

53345220 is an abundant number, since it is smaller than the sum of its proper divisors (96021564).

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

53345220 is a wasteful number, since it uses less digits than its factorization.

53345220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889099 (or 889097 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 53345220 is about 7303.7812124953. The cubic root of 53345220 is about 376.4423739291.

Adding to 53345220 its reverse (2254335), we get a palindrome (55599555).

It can be divided in two parts, 533 and 45220, that added together give a triangular number (45753 = T₃₀₂).

The spelling of 53345220 in words is "fifty-three million, three hundred forty-five thousand, two hundred twenty".