53085555 has 48 divisors (see below), whose sum is σ = 95056416. Its totient is φ = 27394560.

The previous prime is 53085553. The next prime is 53085559. The reversal of 53085555 is 55558035.

It is not a de Polignac number, because 53085555 - 2¹ = 53085553 is a prime.

It is a super-2 number, since 2×53085555² = 5636152299316050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53085553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 227719 + ... + 227951.

It is an arithmetic number, because the mean of its divisors is an integer number (1980342).

Almost surely, 2^53085555 is an apocalyptic number.

53085555 is a deficient number, since it is larger than the sum of its proper divisors (41970861).

53085555 is a wasteful number, since it uses less digits than its factorization.

53085555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The square root of 53085555 is about 7285.9834614141. The cubic root of 53085555 is about 375.8305856484.

The spelling of 53085555 in words is "fifty-three million, eighty-five thousand, five hundred fifty-five".