5540511231 has 12 divisors (see below), whose sum is σ = 8010517320. Its totient is φ = 3690186480.

The previous prime is 5540511181. The next prime is 5540511241. The reversal of 5540511231 is 1321150455.

5540511231 is a `hidden beast` number, since 5 + 540 + 5 + 112 + 3 + 1 = 666.

It is not a de Polignac number, because 5540511231 - 2¹⁰ = 5540510207 is a prime.

It is a super-2 number, since 2×5540511231² = 61394529401674270722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5540511195 and 5540511204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5540511241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280561 + ... + 299658.

It is an arithmetic number, because the mean of its divisors is an integer number (667543110).

Almost surely, 2^5540511231 is an apocalyptic number.

5540511231 is a deficient number, since it is larger than the sum of its proper divisors (2470006089).

5540511231 is a wasteful number, since it uses less digits than its factorization.

5540511231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581286 (or 581283 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 5540511231 is about 74434.6104376183. The cubic root of 5540511231 is about 1769.4974720088.

Adding to 5540511231 its reverse (1321150455), we get a palindrome (6861661686).

The spelling of 5540511231 in words is "five billion, five hundred forty million, five hundred eleven thousand, two hundred thirty-one".