55532211 has 16 divisors (see below), whose sum is σ = 84785664. Its totient is φ = 31670784.

The previous prime is 55532203. The next prime is 55532219. The reversal of 55532211 is 11223555.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55532203) and next prime (55532219).

It is not a de Polignac number, because 55532211 - 2³ = 55532203 is a prime.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55532219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9826 + ... + 14408.

It is an arithmetic number, because the mean of its divisors is an integer number (5299104).

Almost surely, 2^55532211 is an apocalyptic number.

55532211 is a deficient number, since it is larger than the sum of its proper divisors (29253453).

55532211 is a wasteful number, since it uses less digits than its factorization.

55532211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170.

The product of its digits is 1500, while the sum is 24.

The square root of 55532211 is about 7451.9937600618. The cubic root of 55532211 is about 381.5179610062.

Adding to 55532211 its reverse (11223555), we get a palindrome (66755766).

The spelling of 55532211 in words is "fifty-five million, five hundred thirty-two thousand, two hundred eleven".