56001503 has 2 divisors, whose sum is σ = 56001504. Its totient is φ = 56001502.

The previous prime is 56001499. The next prime is 56001529. The reversal of 56001503 is 30510065.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56001503 - 2² = 56001499 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56201503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28000751 + 28000752.

It is an arithmetic number, because the mean of its divisors is an integer number (28000752).

Almost surely, 2^56001503 is an apocalyptic number.

56001503 is a deficient number, since it is larger than the sum of its proper divisors (1).

56001503 is an equidigital number, since it uses as much as digits as its factorization.

56001503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 56001503 is about 7483.4151962857. The cubic root of 56001503 is about 382.5896593043.

Adding to 56001503 its reverse (30510065), we get a palindrome (86511568).

The spelling of 56001503 in words is "fifty-six million, one thousand, five hundred three".