55552985 has 4 divisors (see below), whose sum is σ = 66663588. Its totient is φ = 44442384.

The previous prime is 55552969. The next prime is 55552993. The reversal of 55552985 is 58925555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19456921 + 36096064 = 4411^2 + 6008^2 .

It is a cyclic number.

It is not a de Polignac number, because 55552985 - 2⁴ = 55552969 is a prime.

It is a super-2 number, since 2×55552985² = 6172268284820450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 5555294 + ... + 5555303.

It is an arithmetic number, because the mean of its divisors is an integer number (16665897).

Almost surely, 2^55552985 is an apocalyptic number.

It is an amenable number.

55552985 is a deficient number, since it is larger than the sum of its proper divisors (11110603).

55552985 is a wasteful number, since it uses less digits than its factorization.

55552985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110602.

The product of its digits is 450000, while the sum is 44.

The square root of 55552985 is about 7453.3874848957. The cubic root of 55552985 is about 381.5655289906.

The spelling of 55552985 in words is "fifty-five million, five hundred fifty-two thousand, nine hundred eighty-five".