55691153 has 4 divisors (see below), whose sum is σ = 63647040. Its totient is φ = 47735268.

The previous prime is 55691117. The next prime is 55691177. The reversal of 55691153 is 35119655.

It is a happy number.

55691153 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 not a de Polignac number, because 55691153 - 2⁶ = 55691089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55691453) 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, 3977933 + ... + 3977946.

It is an arithmetic number, because the mean of its divisors is an integer number (15911760).

Almost surely, 2^55691153 is an apocalyptic number.

It is an amenable number.

55691153 is a deficient number, since it is larger than the sum of its proper divisors (7955887).

55691153 is an equidigital number, since it uses as much as digits as its factorization.

55691153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7955886.

The product of its digits is 20250, while the sum is 35.

The square root of 55691153 is about 7462.6505344951. The cubic root of 55691153 is about 381.8816026084.

The spelling of 55691153 in words is "fifty-five million, six hundred ninety-one thousand, one hundred fifty-three".