55075691 has 6 divisors (see below), whose sum is σ = 60537876. Its totient is φ = 50068700.

The previous prime is 55075679. The next prime is 55075697. The reversal of 55075691 is 19657055.

55075691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55075691 - 2⁶ = 55075627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55075697) 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 5 ways as a sum of consecutive naturals, for example, 227465 + ... + 227706.

It is an arithmetic number, because the mean of its divisors is an integer number (10089646).

Almost surely, 2^55075691 is an apocalyptic number.

55075691 is a deficient number, since it is larger than the sum of its proper divisors (5462185).

55075691 is a wasteful number, since it uses less digits than its factorization.

55075691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455193 (or 455182 counting only the distinct ones).

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 55075691 is about 7421.2998187649. The cubic root of 55075691 is about 380.4696202152.

The spelling of 55075691 in words is "fifty-five million, seventy-five thousand, six hundred ninety-one".