55252985 has 8 divisors (see below), whose sum is σ = 66362760. Its totient is φ = 44162944.

The previous prime is 55252963. The next prime is 55252987. The reversal of 55252985 is 58925255.

It can be written as a sum of positive squares in 4 ways, for example, as 8357881 + 46895104 = 2891^2 + 6848^2 .

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 55252985 - 2¹² = 55248889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55252987) 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, 2159 + ... + 10731.

It is an arithmetic number, because the mean of its divisors is an integer number (8295345).

Almost surely, 2^55252985 is an apocalyptic number.

It is an amenable number.

55252985 is a deficient number, since it is larger than the sum of its proper divisors (11109775).

55252985 is a wasteful number, since it uses less digits than its factorization.

55252985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9867.

The product of its digits is 180000, while the sum is 41.

The square root of 55252985 is about 7433.2351637763. The cubic root of 55252985 is about 380.8774391484.

The spelling of 55252985 in words is "fifty-five million, two hundred fifty-two thousand, nine hundred eighty-five".