56611603 has 4 divisors (see below), whose sum is σ = 56811928. Its totient is φ = 56411280.

The previous prime is 56611589. The next prime is 56611627. The reversal of 56611603 is 30611665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56611603 - 2²¹ = 54514451 is a prime.

It is a Duffinian number.

56611603 is a modest number, since divided by 11603 gives 566 as remainder.

It is not an unprimeable number, because it can be changed into a prime (56611663) 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, 99738 + ... + 100303.

It is an arithmetic number, because the mean of its divisors is an integer number (14202982).

Almost surely, 2^56611603 is an apocalyptic number.

56611603 is a deficient number, since it is larger than the sum of its proper divisors (200325).

56611603 is a wasteful number, since it uses less digits than its factorization.

56611603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200324.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 56611603 is about 7524.0682479627. The cubic root of 56611603 is about 383.9739995236.

The spelling of 56611603 in words is "fifty-six million, six hundred eleven thousand, six hundred three".