253521055 has 8 divisors (see below), whose sum is σ = 310698432. Its totient is φ = 198501408.

The previous prime is 253521041. The next prime is 253521061. The reversal of 253521055 is 550125352.

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 253521055 - 2²⁵ = 219966623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539172 + ... + 539641.

It is an arithmetic number, because the mean of its divisors is an integer number (38837304).

Almost surely, 2^253521055 is an apocalyptic number.

253521055 is a deficient number, since it is larger than the sum of its proper divisors (57177377).

253521055 is a wasteful number, since it uses less digits than its factorization.

253521055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078865.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 253521055 is about 15922.3445195737. The cubic root of 253521055 is about 632.9042487567.

The spelling of 253521055 in words is "two hundred fifty-three million, five hundred twenty-one thousand, fifty-five".