52455221 has 8 divisors (see below), whose sum is σ = 64560384. Its totient is φ = 41502960.

The previous prime is 52455209. The next prime is 52455223. The reversal of 52455221 is 12255425.

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 52455221 - 2²² = 48260917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52455223) 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, 288125 + ... + 288306.

It is an arithmetic number, because the mean of its divisors is an integer number (8070048).

Almost surely, 2^52455221 is an apocalyptic number.

It is an amenable number.

52455221 is a deficient number, since it is larger than the sum of its proper divisors (12105163).

52455221 is a wasteful number, since it uses less digits than its factorization.

52455221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576451.

The product of its digits is 4000, while the sum is 26.

The square root of 52455221 is about 7242.5976693449. The cubic root of 52455221 is about 374.3371305978.

The spelling of 52455221 in words is "fifty-two million, four hundred fifty-five thousand, two hundred twenty-one".