55109701 has 2 divisors, whose sum is σ = 55109702. Its totient is φ = 55109700.

The previous prime is 55109693. The next prime is 55109713. The reversal of 55109701 is 10790155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54908100 + 201601 = 7410^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 55109701 - 2³ = 55109693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55109701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55101701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27554850 + 27554851.

It is an arithmetic number, because the mean of its divisors is an integer number (27554851).

Almost surely, 2^55109701 is an apocalyptic number.

It is an amenable number.

55109701 is a deficient number, since it is larger than the sum of its proper divisors (1).

55109701 is an equidigital number, since it uses as much as digits as its factorization.

55109701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 55109701 is about 7423.5908427122. The cubic root of 55109701 is about 380.5479191826.

Adding to 55109701 its reverse (10790155), we get a palindrome (65899856).

The spelling of 55109701 in words is "fifty-five million, one hundred nine thousand, seven hundred one".