56201623 has 4 divisors (see below), whose sum is σ = 58139640. Its totient is φ = 54263608.

The previous prime is 56201617. The next prime is 56201653. The reversal of 56201623 is 32610265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32610265 = 5 ⋅6522053.

It is a cyclic number.

It is not a de Polignac number, because 56201623 - 2⁵ = 56201591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56201603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968965 + ... + 969022.

It is an arithmetic number, because the mean of its divisors is an integer number (14534910).

Almost surely, 2^56201623 is an apocalyptic number.

56201623 is a deficient number, since it is larger than the sum of its proper divisors (1938017).

56201623 is a wasteful number, since it uses less digits than its factorization.

56201623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938016.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 56201623 is about 7496.7741729360. The cubic root of 56201623 is about 383.0448424659.

Adding to 56201623 its reverse (32610265), we get a palindrome (88811888).

The spelling of 56201623 in words is "fifty-six million, two hundred one thousand, six hundred twenty-three".