52056221 has 8 divisors (see below), whose sum is σ = 59558784. Its totient is φ = 44570160.

The previous prime is 52056217. The next prime is 52056233. The reversal of 52056221 is 12265025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52056221 - 2² = 52056217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52056271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3611 + ... + 10823.

It is an arithmetic number, because the mean of its divisors is an integer number (7444848).

Almost surely, 2^52056221 is an apocalyptic number.

It is an amenable number.

52056221 is a deficient number, since it is larger than the sum of its proper divisors (7502563).

52056221 is a wasteful number, since it uses less digits than its factorization.

52056221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8251.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 52056221 is about 7214.9997227997. Note that the first 3 decimals coincide. The cubic root of 52056221 is about 373.3855835847.

The spelling of 52056221 in words is "fifty-two million, fifty-six thousand, two hundred twenty-one".