55022161 has 4 divisors (see below), whose sum is σ = 55954800. Its totient is φ = 54089524.

The previous prime is 55022159. The next prime is 55022167. The reversal of 55022161 is 16122055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55022161 - 2¹ = 55022159 is a prime.

It is a super-2 number, since 2×55022161² = 6054876402219842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55022167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466231 + ... + 466348.

It is an arithmetic number, because the mean of its divisors is an integer number (13988700).

Almost surely, 2^55022161 is an apocalyptic number.

It is an amenable number.

55022161 is a deficient number, since it is larger than the sum of its proper divisors (932639).

55022161 is an equidigital number, since it uses as much as digits as its factorization.

55022161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932638.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 55022161 is about 7417.6924309383. The cubic root of 55022161 is about 380.3463163263.

The spelling of 55022161 in words is "fifty-five million, twenty-two thousand, one hundred sixty-one".