654382121 has 4 divisors (see below), whose sum is σ = 654680832. Its totient is φ = 654083412.

The previous prime is 654382109. The next prime is 654382159. The reversal of 654382121 is 121283456.

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 654382121 - 2¹⁴ = 654365737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (654382171) 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, 146045 + ... + 150458.

It is an arithmetic number, because the mean of its divisors is an integer number (163670208).

Almost surely, 2^654382121 is an apocalyptic number.

It is an amenable number.

654382121 is a deficient number, since it is larger than the sum of its proper divisors (298711).

654382121 is a wasteful number, since it uses less digits than its factorization.

654382121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298710.

The product of its digits is 11520, while the sum is 32.

The square root of 654382121 is about 25580.8936708630. The cubic root of 654382121 is about 868.1813955626.

The spelling of 654382121 in words is "six hundred fifty-four million, three hundred eighty-two thousand, one hundred twenty-one".