4556401 has 2 divisors, whose sum is σ = 4556402. Its totient is φ = 4556400.

The previous prime is 4556399. The next prime is 4556407. The reversal of 4556401 is 1046554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4494400 + 62001 = 2120^2 + 249^2 .

It is a cyclic number.

It is not a de Polignac number, because 4556401 - 2¹ = 4556399 is a prime.

Together with 4556399, it forms a pair of twin primes.

4556401 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4556407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2278200 + 2278201.

It is an arithmetic number, because the mean of its divisors is an integer number (2278201).

Almost surely, 2^4556401 is an apocalyptic number.

It is an amenable number.

4556401 is a deficient number, since it is larger than the sum of its proper divisors (1).

4556401 is an equidigital number, since it uses as much as digits as its factorization.

4556401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4556401 is about 2134.5727909818. The cubic root of 4556401 is about 165.7832488219.

The spelling of 4556401 in words is "four million, five hundred fifty-six thousand, four hundred one".