52220724 has 24 divisors (see below), whose sum is σ = 122209248. Its totient is φ = 17355360.

The previous prime is 52220717. The next prime is 52220731. The reversal of 52220724 is 42702225.

52220724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52220717) and next prime (52220731).

It is a junction number, because it is equal to n+sod(n) for n = 52220694 and 52220703.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2107 + ... + 10434.

It is an arithmetic number, because the mean of its divisors is an integer number (5092052).

Almost surely, 2^52220724 is an apocalyptic number.

It is an amenable number.

52220724 is an abundant number, since it is smaller than the sum of its proper divisors (69988524).

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

52220724 is a wasteful number, since it uses less digits than its factorization.

52220724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12895 (or 12893 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 52220724 is about 7226.3908003927. The cubic root of 52220724 is about 373.7784822610.

Adding to 52220724 its reverse (42702225), we get a palindrome (94922949).

The spelling of 52220724 in words is "fifty-two million, two hundred twenty thousand, seven hundred twenty-four".