4555891 has 2 divisors, whose sum is σ = 4555892. Its totient is φ = 4555890.

The previous prime is 4555883. The next prime is 4555897. The reversal of 4555891 is 1985554.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4555891 - 2³ = 4555883 is a prime.

It is a super-2 number, since 2×4555891² = 41512285607762, which contains 22 as substring.

4555891 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4555891.

It is not a weakly prime, because it can be changed into another prime (4555897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2277945 + 2277946.

It is an arithmetic number, because the mean of its divisors is an integer number (2277946).

Almost surely, 2^4555891 is an apocalyptic number.

4555891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4555891 is an equidigital number, since it uses as much as digits as its factorization.

4555891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 37.

The square root of 4555891 is about 2134.4533257956. The cubic root of 4555891 is about 165.7770631934. Note that the first 3 decimals are identical.

The spelling of 4555891 in words is "four million, five hundred fifty-five thousand, eight hundred ninety-one".