55753691 has 4 divisors (see below), whose sum is σ = 63718512. Its totient is φ = 47788872.

The previous prime is 55753669. The next prime is 55753723. The reversal of 55753691 is 19635755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55753691 - 2⁶ = 55753627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55753601) 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 3 ways as a sum of consecutive naturals, for example, 3982400 + ... + 3982413.

It is an arithmetic number, because the mean of its divisors is an integer number (15929628).

Almost surely, 2^55753691 is an apocalyptic number.

55753691 is a deficient number, since it is larger than the sum of its proper divisors (7964821).

55753691 is an equidigital number, since it uses as much as digits as its factorization.

55753691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7964820.

The product of its digits is 141750, while the sum is 41.

The square root of 55753691 is about 7466.8394250848. The cubic root of 55753691 is about 382.0244929153.

The spelling of 55753691 in words is "fifty-five million, seven hundred fifty-three thousand, six hundred ninety-one".