2005550231 has 4 divisors (see below), whose sum is σ = 2123523792. Its totient is φ = 1887576672.

The previous prime is 2005550227. The next prime is 2005550273. The reversal of 2005550231 is 1320555002.

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 2005550231 - 2² = 2005550227 is a prime.

It is a super-2 number, since 2×2005550231² = 8044463458128306722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2005550197 and 2005550206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005550201) 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, 58986755 + ... + 58986788.

It is an arithmetic number, because the mean of its divisors is an integer number (530880948).

Almost surely, 2^2005550231 is an apocalyptic number.

2005550231 is a deficient number, since it is larger than the sum of its proper divisors (117973561).

2005550231 is a wasteful number, since it uses less digits than its factorization.

2005550231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117973560.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 2005550231 is about 44783.3700272769. The cubic root of 2005550231 is about 1261.0854489224.

The spelling of 2005550231 in words is "two billion, five million, five hundred fifty thousand, two hundred thirty-one".