5539512231 has 24 divisors (see below), whose sum is σ = 8732200464. Its totient is φ = 3356021760.

The previous prime is 5539512193. The next prime is 5539512283. The reversal of 5539512231 is 1322159355.

5539512231 is a `hidden beast` number, since 553 + 9 + 51 + 22 + 31 = 666.

It is not a de Polignac number, because 5539512231 - 2¹¹ = 5539510183 is a prime.

It is a super-2 number, since 2×5539512231² = 61372391514797194722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5539512031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301645 + ... + 319481.

It is an arithmetic number, because the mean of its divisors is an integer number (363841686).

Almost surely, 2^5539512231 is an apocalyptic number.

5539512231 is a deficient number, since it is larger than the sum of its proper divisors (3192688233).

5539512231 is a wasteful number, since it uses less digits than its factorization.

5539512231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20991 (or 20988 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 5539512231 is about 74427.8995471456. The cubic root of 5539512231 is about 1769.3911139396.

The spelling of 5539512231 in words is "five billion, five hundred thirty-nine million, five hundred twelve thousand, two hundred thirty-one".