253055221 has 4 divisors (see below), whose sum is σ = 253584000. Its totient is φ = 252526444.

The previous prime is 253055219. The next prime is 253055227. The reversal of 253055221 is 122550352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253055221 - 2¹ = 253055219 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 (253055227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263671 + ... + 264628.

It is an arithmetic number, because the mean of its divisors is an integer number (63396000).

Almost surely, 2^253055221 is an apocalyptic number.

It is an amenable number.

253055221 is a deficient number, since it is larger than the sum of its proper divisors (528779).

253055221 is an equidigital number, since it uses as much as digits as its factorization.

253055221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528778.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 253055221 is about 15907.7094831406. The cubic root of 253055221 is about 632.5163663374.

The spelling of 253055221 in words is "two hundred fifty-three million, fifty-five thousand, two hundred twenty-one".