652551217 has 8 divisors (see below), whose sum is σ = 660385440. Its totient is φ = 644760480.

The previous prime is 652551169. The next prime is 652551241. The reversal of 652551217 is 712155256.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 652551217 - 2²⁷ = 518333489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652551287) 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 7 ways as a sum of consecutive naturals, for example, 19834 + ... + 41212.

It is an arithmetic number, because the mean of its divisors is an integer number (82548180).

Almost surely, 2^652551217 is an apocalyptic number.

It is an amenable number.

652551217 is a deficient number, since it is larger than the sum of its proper divisors (7834223).

652551217 is a wasteful number, since it uses less digits than its factorization.

652551217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21743.

The product of its digits is 21000, while the sum is 34.

The square root of 652551217 is about 25545.0820511503. The cubic root of 652551217 is about 867.3709406679.

The spelling of 652551217 in words is "six hundred fifty-two million, five hundred fifty-one thousand, two hundred seventeen".