654643051 has 4 divisors (see below), whose sum is σ = 669867352. Its totient is φ = 639418752.

The previous prime is 654643019. The next prime is 654643063. The reversal of 654643051 is 150346456.

654643051 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.

It is a cyclic number.

It is not a de Polignac number, because 654643051 - 2⁵ = 654643019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654642998 and 654643016.

It is not an unprimeable number, because it can be changed into a prime (654644051) 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, 7612086 + ... + 7612171.

It is an arithmetic number, because the mean of its divisors is an integer number (167466838).

Almost surely, 2^654643051 is an apocalyptic number.

654643051 is a deficient number, since it is larger than the sum of its proper divisors (15224301).

654643051 is a wasteful number, since it uses less digits than its factorization.

654643051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15224300.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 654643051 is about 25585.9932580308. The cubic root of 654643051 is about 868.2967738517.

The spelling of 654643051 in words is "six hundred fifty-four million, six hundred forty-three thousand, fifty-one".