55432210 has 8 divisors (see below), whose sum is σ = 99777996. Its totient is φ = 22172880.

The previous prime is 55432207. The next prime is 55432213. The reversal of 55432210 is 1223455.

It is an interprime number because it is at equal distance from previous prime (55432207) and next prime (55432213).

It can be written as a sum of positive squares in 2 ways, for example, as 54508689 + 923521 = 7383^2 + 961^2 .

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

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55432213) 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, 2771601 + ... + 2771620.

Almost surely, 2^55432210 is an apocalyptic number.

55432210 is a deficient number, since it is larger than the sum of its proper divisors (44345786).

55432210 is a wasteful number, since it uses less digits than its factorization.

55432210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5543228.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55432210 is about 7445.2810558098. The cubic root of 55432210 is about 381.2888141080.

Adding to 55432210 its reverse (1223455), we get a palindrome (56655665).

The spelling of 55432210 in words is "fifty-five million, four hundred thirty-two thousand, two hundred ten".