253321555 has 8 divisors (see below), whose sum is σ = 304455312. Its totient is φ = 202344288.

The previous prime is 253321513. The next prime is 253321567. The reversal of 253321555 is 555123352.

253321555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 253321555 - 2¹³ = 253313363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35529 + ... + 42058.

It is an arithmetic number, because the mean of its divisors is an integer number (38056914).

Almost surely, 2^253321555 is an apocalyptic number.

253321555 is a deficient number, since it is larger than the sum of its proper divisors (51133757).

253321555 is an equidigital number, since it uses as much as digits as its factorization.

253321555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78245.

The product of its digits is 22500, while the sum is 31.

The square root of 253321555 is about 15916.0785057124. The cubic root of 253321555 is about 632.7381908436.

The spelling of 253321555 in words is "two hundred fifty-three million, three hundred twenty-one thousand, five hundred fifty-five".