55758481 has 4 divisors (see below), whose sum is σ = 56703600. Its totient is φ = 54813364.

The previous prime is 55758473. The next prime is 55758511. The reversal of 55758481 is 18485755.

55758481 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 a cyclic number.

It is not a de Polignac number, because 55758481 - 2³ = 55758473 is a prime.

It is a super-2 number, since 2×55758481² = 6218016406854722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55758421) 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, 472471 + ... + 472588.

It is an arithmetic number, because the mean of its divisors is an integer number (14175900).

Almost surely, 2^55758481 is an apocalyptic number.

It is an amenable number.

55758481 is a deficient number, since it is larger than the sum of its proper divisors (945119).

55758481 is an equidigital number, since it uses as much as digits as its factorization.

55758481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945118.

The product of its digits is 224000, while the sum is 43.

The square root of 55758481 is about 7467.1601697031. The cubic root of 55758481 is about 382.0354329678.

The spelling of 55758481 in words is "fifty-five million, seven hundred fifty-eight thousand, four hundred eighty-one".