55056619 has 2 divisors, whose sum is σ = 55056620. Its totient is φ = 55056618.

The previous prime is 55056613. The next prime is 55056653. The reversal of 55056619 is 91665055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55056619 - 2¹⁷ = 54925547 is a prime.

It is a super-2 number, since 2×55056619² = 6062462591422322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55056613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27528309 + 27528310.

It is an arithmetic number, because the mean of its divisors is an integer number (27528310).

Almost surely, 2^55056619 is an apocalyptic number.

55056619 is a deficient number, since it is larger than the sum of its proper divisors (1).

55056619 is an equidigital number, since it uses as much as digits as its factorization.

55056619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 55056619 is about 7420.0147573977. The cubic root of 55056619 is about 380.4256979075.

The spelling of 55056619 in words is "fifty-five million, fifty-six thousand, six hundred nineteen".