52002191 has 4 divisors (see below), whose sum is σ = 53795400. Its totient is φ = 50208984.

The previous prime is 52002161. The next prime is 52002193. The reversal of 52002191 is 19120025.

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 52002191 - 2¹⁸ = 51740047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52002193) 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, 896561 + ... + 896618.

It is an arithmetic number, because the mean of its divisors is an integer number (13448850).

Almost surely, 2^52002191 is an apocalyptic number.

52002191 is a deficient number, since it is larger than the sum of its proper divisors (1793209).

52002191 is a wasteful number, since it uses less digits than its factorization.

52002191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793208.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 52002191 is about 7211.2544678440. The cubic root of 52002191 is about 373.2563578722.

The spelling of 52002191 in words is "fifty-two million, two thousand, one hundred ninety-one".