55432285 has 4 divisors (see below), whose sum is σ = 66518748. Its totient is φ = 44345824.

The previous prime is 55432283. The next prime is 55432301. The reversal of 55432285 is 58223455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58223455 = 5 ⋅11644691.

It can be written as a sum of positive squares in 2 ways, for example, as 40081561 + 15350724 = 6331^2 + 3918^2 .

It is a cyclic number.

It is not a de Polignac number, because 55432285 - 2¹ = 55432283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55432285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55432283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5543224 + ... + 5543233.

It is an arithmetic number, because the mean of its divisors is an integer number (16629687).

Almost surely, 2^55432285 is an apocalyptic number.

It is an amenable number.

55432285 is a deficient number, since it is larger than the sum of its proper divisors (11086463).

55432285 is a wasteful number, since it uses less digits than its factorization.

55432285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11086462.

The product of its digits is 48000, while the sum is 34.

The square root of 55432285 is about 7445.2860925555. The cubic root of 55432285 is about 381.2889860696.

The spelling of 55432285 in words is "fifty-five million, four hundred thirty-two thousand, two hundred eighty-five".