6356401 has 2 divisors, whose sum is σ = 6356402. Its totient is φ = 6356400.

The previous prime is 6356387. The next prime is 6356407. The reversal of 6356401 is 1046536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5832225 + 524176 = 2415^2 + 724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6356401 is a prime.

It is an Ulam number.

6356401 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6356407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3178200 + 3178201.

It is an arithmetic number, because the mean of its divisors is an integer number (3178201).

Almost surely, 2^6356401 is an apocalyptic number.

It is an amenable number.

6356401 is a deficient number, since it is larger than the sum of its proper divisors (1).

6356401 is an equidigital number, since it uses as much as digits as its factorization.

6356401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 6356401 is about 2521.1903934451. The cubic root of 6356401 is about 185.2409910246.

The spelling of 6356401 in words is "six million, three hundred fifty-six thousand, four hundred one".