55206901 has 2 divisors, whose sum is σ = 55206902. Its totient is φ = 55206900.

The previous prime is 55206857. The next prime is 55206917. The reversal of 55206901 is 10960255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54982225 + 224676 = 7415^2 + 474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55206901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55206901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55206101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27603450 + 27603451.

It is an arithmetic number, because the mean of its divisors is an integer number (27603451).

Almost surely, 2^55206901 is an apocalyptic number.

It is an amenable number.

55206901 is a deficient number, since it is larger than the sum of its proper divisors (1).

55206901 is an equidigital number, since it uses as much as digits as its factorization.

55206901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 55206901 is about 7430.1346555766. The cubic root of 55206901 is about 380.7715188496.

It can be divided in two parts, 5520 and 6901, that added together give a palindrome (12421).

The spelling of 55206901 in words is "fifty-five million, two hundred six thousand, nine hundred one".