652191 has 4 divisors (see below), whose sum is σ = 869592. Its totient is φ = 434792.

The previous prime is 652189. The next prime is 652207. The reversal of 652191 is 191256.

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 652191 - 2¹ = 652189 is a prime.

It is a D-number.

652191 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652121) 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, 108696 + ... + 108701.

It is an arithmetic number, because the mean of its divisors is an integer number (217398).

2⁶⁵²¹⁹¹ is an apocalyptic number.

652191 is a deficient number, since it is larger than the sum of its proper divisors (217401).

652191 is a wasteful number, since it uses less digits than its factorization.

652191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217400.

The product of its digits is 540, while the sum is 24.

The square root of 652191 is about 807.5834322223. The cubic root of 652191 is about 86.7211311172.

The spelling of 652191 in words is "six hundred fifty-two thousand, one hundred ninety-one".