56155603 has 16 divisors (see below), whose sum is σ = 66380224. Its totient is φ = 46500480.

The previous prime is 56155591. The next prime is 56155667. The reversal of 56155603 is 30655165.

It is a cyclic number.

It is not a de Polignac number, because 56155603 - 2¹³ = 56147411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56155003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39973 + ... + 41353.

It is an arithmetic number, because the mean of its divisors is an integer number (4148764).

Almost surely, 2^56155603 is an apocalyptic number.

56155603 is a deficient number, since it is larger than the sum of its proper divisors (10224621).

56155603 is a wasteful number, since it uses less digits than its factorization.

56155603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 56155603 is about 7493.7042242138. The cubic root of 56155603 is about 382.9402634146.

The spelling of 56155603 in words is "fifty-six million, one hundred fifty-five thousand, six hundred three".