55101689 has 4 divisors (see below), whose sum is σ = 55332480. Its totient is φ = 54870900.

The previous prime is 55101677. The next prime is 55101701. The reversal of 55101689 is 98610155.

55101689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (55101677) and next prime (55101701).

It is a cyclic number.

It is not a de Polignac number, because 55101689 - 2²⁰ = 54053113 is a prime.

It is a super-2 number, since 2×55101689² = 6072392261305442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55101659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115037 + ... + 115514.

It is an arithmetic number, because the mean of its divisors is an integer number (13833120).

Almost surely, 2^55101689 is an apocalyptic number.

It is an amenable number.

55101689 is a deficient number, since it is larger than the sum of its proper divisors (230791).

55101689 is a wasteful number, since it uses less digits than its factorization.

55101689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230790.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 55101689 is about 7423.0511920638. The cubic root of 55101689 is about 380.5294765876.

The spelling of 55101689 in words is "fifty-five million, one hundred one thousand, six hundred eighty-nine".