55220141 has 2 divisors, whose sum is σ = 55220142. Its totient is φ = 55220140.

The previous prime is 55220107. The next prime is 55220167. The reversal of 55220141 is 14102255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46635241 + 8584900 = 6829^2 + 2930^2 .

It is a cyclic number.

It is not a de Polignac number, because 55220141 - 2²² = 51025837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55220101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27610070 + 27610071.

It is an arithmetic number, because the mean of its divisors is an integer number (27610071).

Almost surely, 2^55220141 is an apocalyptic number.

It is an amenable number.

55220141 is a deficient number, since it is larger than the sum of its proper divisors (1).

55220141 is an equidigital number, since it uses as much as digits as its factorization.

55220141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 55220141 is about 7431.0255685201. The cubic root of 55220141 is about 380.8019559378.

Adding to 55220141 its reverse (14102255), we get a palindrome (69322396).

The spelling of 55220141 in words is "fifty-five million, two hundred twenty thousand, one hundred forty-one".