56390303 has 2 divisors, whose sum is σ = 56390304. Its totient is φ = 56390302.

The previous prime is 56390287. The next prime is 56390353. The reversal of 56390303 is 30309365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56390303 - 2⁴ = 56390287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56390353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28195151 + 28195152.

It is an arithmetic number, because the mean of its divisors is an integer number (28195152).

Almost surely, 2^56390303 is an apocalyptic number.

56390303 is a deficient number, since it is larger than the sum of its proper divisors (1).

56390303 is an equidigital number, since it uses as much as digits as its factorization.

56390303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 29.

The square root of 56390303 is about 7509.3477080236. The cubic root of 56390303 is about 383.4730161815.

Adding to 56390303 its reverse (30309365), we get a palindrome (86699668).

The spelling of 56390303 in words is "fifty-six million, three hundred ninety thousand, three hundred three".