55831603 has 4 divisors (see below), whose sum is σ = 58259088. Its totient is φ = 53404120.

The previous prime is 55831561. The next prime is 55831663. The reversal of 55831603 is 30613855.

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 55831603 - 2⁹ = 55831091 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55831663) 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, 1213708 + ... + 1213753.

It is an arithmetic number, because the mean of its divisors is an integer number (14564772).

Almost surely, 2^55831603 is an apocalyptic number.

55831603 is a deficient number, since it is larger than the sum of its proper divisors (2427485).

55831603 is a wasteful number, since it uses less digits than its factorization.

55831603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427484.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 55831603 is about 7472.0548044029. The cubic root of 55831603 is about 382.2023611902.

The spelling of 55831603 in words is "fifty-five million, eight hundred thirty-one thousand, six hundred three".