56505123 has 12 divisors (see below), whose sum is σ = 82071808. Its totient is φ = 37460880.

The previous prime is 56505103. The next prime is 56505131. The reversal of 56505123 is 32150565.

56505123 is a `hidden beast` number, since 5 + 650 + 5 + 1 + 2 + 3 = 666.

It is not a de Polignac number, because 56505123 - 2⁹ = 56504611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56505103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15715 + ... + 18972.

Almost surely, 2^56505123 is an apocalyptic number.

56505123 is a deficient number, since it is larger than the sum of its proper divisors (25566685).

56505123 is a wasteful number, since it uses less digits than its factorization.

56505123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34874 (or 34871 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 56505123 is about 7516.9889583529. The cubic root of 56505123 is about 383.7331112615.

Adding to 56505123 its reverse (32150565), we get a palindrome (88655688).

The spelling of 56505123 in words is "fifty-six million, five hundred five thousand, one hundred twenty-three".