55323985 has 4 divisors (see below), whose sum is σ = 66388788. Its totient is φ = 44259184.

The previous prime is 55323971. The next prime is 55324007. The reversal of 55323985 is 58932355.

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 31820881 + 23503104 = 5641^2 + 4848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55323985 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5532394 + ... + 5532403.

It is an arithmetic number, because the mean of its divisors is an integer number (16597197).

Almost surely, 2^55323985 is an apocalyptic number.

It is an amenable number.

55323985 is a deficient number, since it is larger than the sum of its proper divisors (11064803).

55323985 is a wasteful number, since it uses less digits than its factorization.

55323985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11064802.

The product of its digits is 162000, while the sum is 40.

The square root of 55323985 is about 7438.0094783484. The cubic root of 55323985 is about 381.0405116251.

The spelling of 55323985 in words is "fifty-five million, three hundred twenty-three thousand, nine hundred eighty-five".