55156302161 has 4 divisors (see below), whose sum is σ = 56091154800. Its totient is φ = 54221449524.

The previous prime is 55156302119. The next prime is 55156302167. The reversal of 55156302161 is 16120365155.

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 a de Polignac number, because none of the positive numbers 2^k-55156302161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55156302167) 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 3 ways as a sum of consecutive naturals, for example, 467426231 + ... + 467426348.

It is an arithmetic number, because the mean of its divisors is an integer number (14022788700).

Almost surely, 2^55156302161 is an apocalyptic number.

It is an amenable number.

55156302161 is a deficient number, since it is larger than the sum of its proper divisors (934852639).

55156302161 is an equidigital number, since it uses as much as digits as its factorization.

55156302161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934852638.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 55156302161 in words is "fifty-five billion, one hundred fifty-six million, three hundred two thousand, one hundred sixty-one".