655050221 has 8 divisors (see below), whose sum is σ = 748997184. Its totient is φ = 561195360.

The previous prime is 655050217. The next prime is 655050229. The reversal of 655050221 is 122050556.

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 655050221 - 2² = 655050217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655050229) 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, 7040 + ... + 36873.

It is an arithmetic number, because the mean of its divisors is an integer number (93624648).

Almost surely, 2^655050221 is an apocalyptic number.

It is an amenable number.

655050221 is a deficient number, since it is larger than the sum of its proper divisors (93946963).

655050221 is a wasteful number, since it uses less digits than its factorization.

655050221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46051.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 655050221 is about 25593.9489137569. The cubic root of 655050221 is about 868.4767554584.

The spelling of 655050221 in words is "six hundred fifty-five million, fifty thousand, two hundred twenty-one".