52546221 has 48 divisors (see below), whose sum is σ = 94663296. Its totient is φ = 27347328.

The previous prime is 52546217. The next prime is 52546279. The reversal of 52546221 is 12264525.

52546221 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 52546221 - 2² = 52546217 is a prime.

It is a super-2 number, since 2×52546221² = 5522210682761682, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52546121) 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 47 ways as a sum of consecutive naturals, for example, 67591 + ... + 68363.

It is an arithmetic number, because the mean of its divisors is an integer number (1972152).

Almost surely, 2^52546221 is an apocalyptic number.

It is an amenable number.

52546221 is a deficient number, since it is larger than the sum of its proper divisors (42117075).

52546221 is a wasteful number, since it uses less digits than its factorization.

52546221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 879 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 52546221 is about 7248.8772234050. The cubic root of 52546221 is about 374.5534738494.

The spelling of 52546221 in words is "fifty-two million, five hundred forty-six thousand, two hundred twenty-one".