55245985 has 8 divisors (see below), whose sum is σ = 66360960. Its totient is φ = 44152944.

The previous prime is 55245979. The next prime is 55245997. The reversal of 55245985 is 58954255.

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 55245985 - 2⁷ = 55245857 is a prime.

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, 696 + ... + 10534.

It is an arithmetic number, because the mean of its divisors is an integer number (8295120).

Almost surely, 2^55245985 is an apocalyptic number.

It is an amenable number.

55245985 is a deficient number, since it is larger than the sum of its proper divisors (11114975).

55245985 is a wasteful number, since it uses less digits than its factorization.

55245985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10967.

The product of its digits is 360000, while the sum is 43.

The square root of 55245985 is about 7432.7642906257. The cubic root of 55245985 is about 380.8613540164.

The spelling of 55245985 in words is "fifty-five million, two hundred forty-five thousand, nine hundred eighty-five".