55115161 has 4 divisors (see below), whose sum is σ = 56287872. Its totient is φ = 53942452.

The previous prime is 55115149. The next prime is 55115183. The reversal of 55115161 is 16151155.

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 55115161 - 2⁵ = 55115129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55115131) 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, 586285 + ... + 586378.

It is an arithmetic number, because the mean of its divisors is an integer number (14071968).

Almost surely, 2^55115161 is an apocalyptic number.

It is an amenable number.

55115161 is a deficient number, since it is larger than the sum of its proper divisors (1172711).

55115161 is a wasteful number, since it uses less digits than its factorization.

55115161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172710.

The product of its digits is 750, while the sum is 25.

The square root of 55115161 is about 7423.9585801646. The cubic root of 55115161 is about 380.5604863773.

The spelling of 55115161 in words is "fifty-five million, one hundred fifteen thousand, one hundred sixty-one".