55434019 has 2 divisors, whose sum is σ = 55434020. Its totient is φ = 55434018.

The previous prime is 55434013. The next prime is 55434023. The reversal of 55434019 is 91043455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55434019 - 2¹³ = 55425827 is a prime.

It is a super-2 number, since 2×55434019² = 6145860924984722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55434013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27717009 + 27717010.

It is an arithmetic number, because the mean of its divisors is an integer number (27717010).

Almost surely, 2^55434019 is an apocalyptic number.

55434019 is a deficient number, since it is larger than the sum of its proper divisors (1).

55434019 is an equidigital number, since it uses as much as digits as its factorization.

55434019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 55434019 is about 7445.4025411659. The cubic root of 55434019 is about 381.2929617805.

The spelling of 55434019 in words is "fifty-five million, four hundred thirty-four thousand, nineteen".