55242001 has 2 divisors, whose sum is σ = 55242002. Its totient is φ = 55242000.

The previous prime is 55241957. The next prime is 55242007. The reversal of 55242001 is 10024255.

55242001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39992976 + 15249025 = 6324^2 + 3905^2 .

It is a cyclic number.

It is not a de Polignac number, because 55242001 - 2¹³ = 55233809 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55242001.

It is not a weakly prime, because it can be changed into another prime (55242007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27621000 + 27621001.

It is an arithmetic number, because the mean of its divisors is an integer number (27621001).

Almost surely, 2^55242001 is an apocalyptic number.

It is an amenable number.

55242001 is a deficient number, since it is larger than the sum of its proper divisors (1).

55242001 is an equidigital number, since it uses as much as digits as its factorization.

55242001 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 19.

The square root of 55242001 is about 7432.4962832147. The cubic root of 55242001 is about 380.8521986717.

Adding to 55242001 its reverse (10024255), we get a palindrome (65266256).

The spelling of 55242001 in words is "fifty-five million, two hundred forty-two thousand, one".