55866131 has 8 divisors (see below), whose sum is σ = 59518224. Its totient is φ = 52254720.

The previous prime is 55866121. The next prime is 55866169. The reversal of 55866131 is 13166855.

55866131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55866131 - 2²² = 51671827 is a prime.

It is a super-2 number, since 2×55866131² = 6242049185818322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55866091 and 55866100.

It is not an unprimeable number, because it can be changed into a prime (55866121) 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 7 ways as a sum of consecutive naturals, for example, 7310 + ... + 12851.

It is an arithmetic number, because the mean of its divisors is an integer number (7439778).

Almost surely, 2^55866131 is an apocalyptic number.

55866131 is a deficient number, since it is larger than the sum of its proper divisors (3652093).

55866131 is a wasteful number, since it uses less digits than its factorization.

55866131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20341.

The product of its digits is 21600, while the sum is 35.

The square root of 55866131 is about 7474.3649228547. The cubic root of 55866131 is about 382.2811335637.

The spelling of 55866131 in words is "fifty-five million, eight hundred sixty-six thousand, one hundred thirty-one".