55528085 has 8 divisors (see below), whose sum is σ = 67002936. Its totient is φ = 44176320.

The previous prime is 55528061. The next prime is 55528091. The reversal of 55528085 is 58082555.

It can be written as a sum of positive squares in 4 ways, for example, as 3587236 + 51940849 = 1894^2 + 7207^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-55528085 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 29774 + ... + 31583.

It is an arithmetic number, because the mean of its divisors is an integer number (8375367).

Almost surely, 2^55528085 is an apocalyptic number.

It is an amenable number.

55528085 is a deficient number, since it is larger than the sum of its proper divisors (11474851).

55528085 is a wasteful number, since it uses less digits than its factorization.

55528085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61543.

The product of its (nonzero) digits is 80000, while the sum is 38.

The square root of 55528085 is about 7451.7169162549. The cubic root of 55528085 is about 381.5085119432.

The spelling of 55528085 in words is "fifty-five million, five hundred twenty-eight thousand, eighty-five".