655477481 has 4 divisors (see below), whose sum is σ = 656365200. Its totient is φ = 654589764.

The previous prime is 655477441. The next prime is 655477489. The reversal of 655477481 is 184774556.

655477481 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 655477481 - 2²² = 651283177 is a prime.

It is a super-2 number, since 2×655477481² = 859301456196210722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655477489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442751 + ... + 444228.

It is an arithmetic number, because the mean of its divisors is an integer number (164091300).

Almost surely, 2^655477481 is an apocalyptic number.

It is an amenable number.

655477481 is a deficient number, since it is larger than the sum of its proper divisors (887719).

655477481 is an equidigital number, since it uses as much as digits as its factorization.

655477481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887718.

The product of its digits is 940800, while the sum is 47.

The square root of 655477481 is about 25602.2944479592. The cubic root of 655477481 is about 868.6655372848.

The spelling of 655477481 in words is "six hundred fifty-five million, four hundred seventy-seven thousand, four hundred eighty-one".