55257585 has 8 divisors (see below), whose sum is σ = 88412160. Its totient is φ = 29470704.

The previous prime is 55257583. The next prime is 55257589. The reversal of 55257585 is 58575255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55257585 - 2¹ = 55257583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55257583) 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, 1841905 + ... + 1841934.

It is an arithmetic number, because the mean of its divisors is an integer number (11051520).

Almost surely, 2^55257585 is an apocalyptic number.

It is an amenable number.

55257585 is a deficient number, since it is larger than the sum of its proper divisors (33154575).

55257585 is a wasteful number, since it uses less digits than its factorization.

55257585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683847.

The product of its digits is 350000, while the sum is 42.

The square root of 55257585 is about 7433.5445784632. The cubic root of 55257585 is about 380.8880086383. Note that the first 3 decimals are identical.

The spelling of 55257585 in words is "fifty-five million, two hundred fifty-seven thousand, five hundred eighty-five".