56451503 has 2 divisors, whose sum is σ = 56451504. Its totient is φ = 56451502.

The previous prime is 56451491. The next prime is 56451517. The reversal of 56451503 is 30515465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56451503 - 2⁸ = 56451247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56451553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28225751 + 28225752.

It is an arithmetic number, because the mean of its divisors is an integer number (28225752).

Almost surely, 2^56451503 is an apocalyptic number.

56451503 is a deficient number, since it is larger than the sum of its proper divisors (1).

56451503 is an equidigital number, since it uses as much as digits as its factorization.

56451503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 56451503 is about 7513.4215241792. The cubic root of 56451503 is about 383.6116928829.

Adding to 56451503 its reverse (30515465), we get a palindrome (86966968).

The spelling of 56451503 in words is "fifty-six million, four hundred fifty-one thousand, five hundred three".