10556401 has 2 divisors, whose sum is σ = 10556402. Its totient is φ = 10556400.

The previous prime is 10556389. The next prime is 10556411. The reversal of 10556401 is 10465501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10556001 + 400 = 3249^2 + 20^2 .

It is an emirp because it is prime and its reverse (10465501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10556401 - 2¹⁷ = 10425329 is a prime.

It is a super-2 number, since 2×10556401² = 222875204145602, which contains 22 as substring.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (10556411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278200 + 5278201.

It is an arithmetic number, because the mean of its divisors is an integer number (5278201).

Almost surely, 2^10556401 is an apocalyptic number.

It is an amenable number.

10556401 is a deficient number, since it is larger than the sum of its proper divisors (1).

10556401 is an equidigital number, since it uses as much as digits as its factorization.

10556401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 10556401 is about 3249.0615568191. The cubic root of 10556401 is about 219.3673352517.

The spelling of 10556401 in words is "ten million, five hundred fifty-six thousand, four hundred one".