56123003 has 2 divisors, whose sum is σ = 56123004. Its totient is φ = 56123002.

The previous prime is 56122999. The next prime is 56123021. The reversal of 56123003 is 30032165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56123003 - 2² = 56122999 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56123603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28061501 + 28061502.

It is an arithmetic number, because the mean of its divisors is an integer number (28061502).

Almost surely, 2^56123003 is an apocalyptic number.

56123003 is a deficient number, since it is larger than the sum of its proper divisors (1).

56123003 is an equidigital number, since it uses as much as digits as its factorization.

56123003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 56123003 is about 7491.5287491940. The cubic root of 56123003 is about 382.8661463277.

Adding to 56123003 its reverse (30032165), we get a palindrome (86155168).

The spelling of 56123003 in words is "fifty-six million, one hundred twenty-three thousand, three".