55260019 has 2 divisors, whose sum is σ = 55260020. Its totient is φ = 55260018.

The previous prime is 55260017. The next prime is 55260041. The reversal of 55260019 is 91006255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55260019 - 2¹ = 55260017 is a prime.

It is a super-2 number, since 2×55260019² = 6107339399760722, which contains 22 as substring.

Together with 55260017, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55260017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27630009 + 27630010.

It is an arithmetic number, because the mean of its divisors is an integer number (27630010).

Almost surely, 2^55260019 is an apocalyptic number.

55260019 is a deficient number, since it is larger than the sum of its proper divisors (1).

55260019 is an equidigital number, since it uses as much as digits as its factorization.

55260019 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 55260019 is about 7433.7082939809. The cubic root of 55260019 is about 380.8936010398.

The spelling of 55260019 in words is "fifty-five million, two hundred sixty thousand, nineteen".