56671019 has 2 divisors, whose sum is σ = 56671020. Its totient is φ = 56671018.

The previous prime is 56671003. The next prime is 56671063. The reversal of 56671019 is 91017665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56671019 - 2⁴ = 56671003 is a prime.

It is a super-2 number, since 2×56671019² = 6423208788996722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56671019.

It is not a weakly prime, because it can be changed into another prime (56671099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28335509 + 28335510.

It is an arithmetic number, because the mean of its divisors is an integer number (28335510).

Almost surely, 2^56671019 is an apocalyptic number.

56671019 is a deficient number, since it is larger than the sum of its proper divisors (1).

56671019 is an equidigital number, since it uses as much as digits as its factorization.

56671019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 56671019 is about 7528.0156083791. The cubic root of 56671019 is about 384.1082842588.

The spelling of 56671019 in words is "fifty-six million, six hundred seventy-one thousand, nineteen".