55443311 has 16 divisors (see below), whose sum is σ = 72764160. Its totient is φ = 40927680.

The previous prime is 55443301. The next prime is 55443329. The reversal of 55443311 is 11334455.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55443311 is a prime.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55443301) 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, 17486 + ... + 20411.

It is an arithmetic number, because the mean of its divisors is an integer number (4547760).

Almost surely, 2^55443311 is an apocalyptic number.

55443311 is a deficient number, since it is larger than the sum of its proper divisors (17320849).

55443311 is a wasteful number, since it uses less digits than its factorization.

55443311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37934.

The product of its digits is 3600, while the sum is 26.

The square root of 55443311 is about 7446.0265242611. The cubic root of 55443311 is about 381.3142650423.

Adding to 55443311 its reverse (11334455), we get a palindrome (66777766).

The spelling of 55443311 in words is "fifty-five million, four hundred forty-three thousand, three hundred eleven".