55454519 has 2 divisors, whose sum is σ = 55454520. Its totient is φ = 55454518.

The previous prime is 55454461. The next prime is 55454533. The reversal of 55454519 is 91545455.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55454519 is a prime.

It is a super-2 number, since 2×55454519² = 6150407355042722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55454579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27727259 + 27727260.

It is an arithmetic number, because the mean of its divisors is an integer number (27727260).

Almost surely, 2^55454519 is an apocalyptic number.

55454519 is a deficient number, since it is larger than the sum of its proper divisors (1).

55454519 is an equidigital number, since it uses as much as digits as its factorization.

55454519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90000, while the sum is 38.

The square root of 55454519 is about 7446.7791024039. The cubic root of 55454519 is about 381.3399578461.

The spelling of 55454519 in words is "fifty-five million, four hundred fifty-four thousand, five hundred nineteen".