56136403 has 2 divisors, whose sum is σ = 56136404. Its totient is φ = 56136402.

The previous prime is 56136361. The next prime is 56136461. The reversal of 56136403 is 30463165.

56136403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56136403 is a prime.

It is equal to p_3346039 and since 56136403 and 3346039 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (56136463) 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, 28068201 + 28068202.

It is an arithmetic number, because the mean of its divisors is an integer number (28068202).

Almost surely, 2^56136403 is an apocalyptic number.

56136403 is a deficient number, since it is larger than the sum of its proper divisors (1).

56136403 is an equidigital number, since it uses as much as digits as its factorization.

56136403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 56136403 is about 7492.4230393111. The cubic root of 56136403 is about 382.8966151065.

Adding to 56136403 its reverse (30463165), we get a palindrome (86599568).

The spelling of 56136403 in words is "fifty-six million, one hundred thirty-six thousand, four hundred three".