55711431 has 12 divisors (see below), whose sum is σ = 85205952. Its totient is φ = 34956096.

The previous prime is 55711429. The next prime is 55711457. The reversal of 55711431 is 13411755.

55711431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55711431 - 2¹ = 55711429 is a prime.

It is a super-2 number, since 2×55711431² = 6207527088135522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55711395 and 55711404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55711031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181911 + ... + 182216.

It is an arithmetic number, because the mean of its divisors is an integer number (7100496).

Almost surely, 2^55711431 is an apocalyptic number.

55711431 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55711431 is a deficient number, since it is larger than the sum of its proper divisors (29494521).

55711431 is a wasteful number, since it uses less digits than its factorization.

55711431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364150 (or 364147 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 55711431 is about 7464.0090434029. The cubic root of 55711431 is about 381.9279466268.

The spelling of 55711431 in words is "fifty-five million, seven hundred eleven thousand, four hundred thirty-one".