55069019 has 2 divisors, whose sum is σ = 55069020. Its totient is φ = 55069018.

The previous prime is 55069009. The next prime is 55069033. The reversal of 55069019 is 91096055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55069019 - 2²⁰ = 54020443 is a prime.

It is a super-2 number, since 2×55069019² = 6065193707244722, which contains 22 as substring.

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 55069019.

It is not a weakly prime, because it can be changed into another prime (55069009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27534509 + 27534510.

It is an arithmetic number, because the mean of its divisors is an integer number (27534510).

Almost surely, 2^55069019 is an apocalyptic number.

55069019 is a deficient number, since it is larger than the sum of its proper divisors (1).

55069019 is an equidigital number, since it uses as much as digits as its factorization.

55069019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 55069019 is about 7420.8502882082. The cubic root of 55069019 is about 380.4542559304.

The spelling of 55069019 in words is "fifty-five million, sixty-nine thousand, nineteen".