55445311 has 2 divisors, whose sum is σ = 55445312. Its totient is φ = 55445310.

The previous prime is 55445239. The next prime is 55445317. The reversal of 55445311 is 11354455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55445311 - 2¹¹ = 55443263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55445311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55445317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27722655 + 27722656.

It is an arithmetic number, because the mean of its divisors is an integer number (27722656).

Almost surely, 2^55445311 is an apocalyptic number.

55445311 is a deficient number, since it is larger than the sum of its proper divisors (1).

55445311 is an equidigital number, since it uses as much as digits as its factorization.

55445311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 28.

The square root of 55445311 is about 7446.1608228670. The cubic root of 55445311 is about 381.3188500219.

Adding to 55445311 its reverse (11354455), we get a palindrome (66799766).

The spelling of 55445311 in words is "fifty-five million, four hundred forty-five thousand, three hundred eleven".