55241819 has 2 divisors, whose sum is σ = 55241820. Its totient is φ = 55241818.

The previous prime is 55241731. The next prime is 55241821. The reversal of 55241819 is 91814255.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55241819 is a prime.

It is a super-2 number, since 2×55241819² = 6103317132857522, which contains 22 as substring.

Together with 55241821, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3295817 and since 55241819 and 3295817 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (55241419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27620909 + 27620910.

It is an arithmetic number, because the mean of its divisors is an integer number (27620910).

Almost surely, 2^55241819 is an apocalyptic number.

55241819 is a deficient number, since it is larger than the sum of its proper divisors (1).

55241819 is an equidigital number, since it uses as much as digits as its factorization.

55241819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 35.

The square root of 55241819 is about 7432.4840396734. The cubic root of 55241819 is about 380.8517804200.

The spelling of 55241819 in words is "fifty-five million, two hundred forty-one thousand, eight hundred nineteen".