55220163 has 8 divisors (see below), whose sum is σ = 74302800. Its totient is φ = 36475488.

The previous prime is 55220141. The next prime is 55220167. The reversal of 55220163 is 36102255.

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

It is not a de Polignac number, because 55220163 - 2¹⁰ = 55219139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55220167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84108 + ... + 84761.

It is an arithmetic number, because the mean of its divisors is an integer number (9287850).

Almost surely, 2^55220163 is an apocalyptic number.

55220163 is a deficient number, since it is larger than the sum of its proper divisors (19082637).

55220163 is a wasteful number, since it uses less digits than its factorization.

55220163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168981.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 55220163 is about 7431.0270488002. The cubic root of 55220163 is about 380.8020065089.

The spelling of 55220163 in words is "fifty-five million, two hundred twenty thousand, one hundred sixty-three".