52221345 has 16 divisors (see below), whose sum is σ = 91150272. Its totient is φ = 25319360.

The previous prime is 52221317. The next prime is 52221349. The reversal of 52221345 is 54312225.

52221345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52221345 - 2¹⁷ = 52090273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52221349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158082 + ... + 158411.

It is an arithmetic number, because the mean of its divisors is an integer number (5696892).

Almost surely, 2^52221345 is an apocalyptic number.

52221345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52221345 is a deficient number, since it is larger than the sum of its proper divisors (38928927).

52221345 is a wasteful number, since it uses less digits than its factorization.

52221345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316512.

The product of its digits is 2400, while the sum is 24.

The square root of 52221345 is about 7226.4337677723. The cubic root of 52221345 is about 373.7799638919.

The spelling of 52221345 in words is "fifty-two million, two hundred twenty-one thousand, three hundred forty-five".