55212863 has 8 divisors (see below), whose sum is σ = 56047680. Its totient is φ = 54381600.

The previous prime is 55212823. The next prime is 55212877. The reversal of 55212863 is 36821255.

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 55212863 - 2¹⁸ = 54950719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55212823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54881 + ... + 55877.

It is an arithmetic number, because the mean of its divisors is an integer number (7005960).

Almost surely, 2^55212863 is an apocalyptic number.

55212863 is a deficient number, since it is larger than the sum of its proper divisors (834817).

55212863 is an equidigital number, since it uses as much as digits as its factorization.

55212863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777.

The product of its digits is 14400, while the sum is 32.

The square root of 55212863 is about 7430.5358487797. The cubic root of 55212863 is about 380.7852253370.

The spelling of 55212863 in words is "fifty-five million, two hundred twelve thousand, eight hundred sixty-three".