55240303 has 2 divisors, whose sum is σ = 55240304. Its totient is φ = 55240302.

The previous prime is 55240291. The next prime is 55240313. The reversal of 55240303 is 30304255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55240303 - 2⁹ = 55239791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55240313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27620151 + 27620152.

It is an arithmetic number, because the mean of its divisors is an integer number (27620152).

Almost surely, 2^55240303 is an apocalyptic number.

55240303 is a deficient number, since it is larger than the sum of its proper divisors (1).

55240303 is an equidigital number, since it uses as much as digits as its factorization.

55240303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 55240303 is about 7432.3820542273. The cubic root of 55240303 is about 380.8482964858.

Adding to 55240303 its reverse (30304255), we get a palindrome (85544558).

The spelling of 55240303 in words is "fifty-five million, two hundred forty thousand, three hundred three".