55066831 has 8 divisors (see below), whose sum is σ = 56269184. Its totient is φ = 53875800.

The previous prime is 55066829. The next prime is 55066849. The reversal of 55066831 is 13866055.

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 55066831 - 2¹ = 55066829 is a prime.

It is a super-2 number, since 2×55066831² = 6064711752765122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55066631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7396 + ... + 12838.

It is an arithmetic number, because the mean of its divisors is an integer number (7033648).

Almost surely, 2^55066831 is an apocalyptic number.

55066831 is a deficient number, since it is larger than the sum of its proper divisors (1202353).

55066831 is a wasteful number, since it uses less digits than its factorization.

55066831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5661.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 55066831 is about 7420.7028642845. The cubic root of 55066831 is about 380.4492171327.

The spelling of 55066831 in words is "fifty-five million, sixty-six thousand, eight hundred thirty-one".