53845691 has 8 divisors (see below), whose sum is σ = 57383424. Its totient is φ = 50407720.

The previous prime is 53845661. The next prime is 53845697. The reversal of 53845691 is 19654835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53845691 - 2²² = 49651387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53845697) 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 7 ways as a sum of consecutive naturals, for example, 23825 + ... + 25986.

It is an arithmetic number, because the mean of its divisors is an integer number (7172928).

Almost surely, 2^53845691 is an apocalyptic number.

53845691 is a deficient number, since it is larger than the sum of its proper divisors (3537733).

53845691 is a wasteful number, since it uses less digits than its factorization.

53845691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49881.

The product of its digits is 129600, while the sum is 41.

The square root of 53845691 is about 7337.9623193363. The cubic root of 53845691 is about 377.6159397111.

The spelling of 53845691 in words is "fifty-three million, eight hundred forty-five thousand, six hundred ninety-one".