52001891 has 8 divisors (see below), whose sum is σ = 53146368. Its totient is φ = 50869000.

The previous prime is 52001869. The next prime is 52001941. The reversal of 52001891 is 19810025.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52001891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52001891.

It is not an unprimeable number, because it can be changed into a prime (52001821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6506 + ... + 12096.

It is an arithmetic number, because the mean of its divisors is an integer number (6643296).

Almost surely, 2^52001891 is an apocalyptic number.

52001891 is a deficient number, since it is larger than the sum of its proper divisors (1144477).

52001891 is a wasteful number, since it uses less digits than its factorization.

52001891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5793.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 52001891 is about 7211.2336669949. The cubic root of 52001891 is about 373.2556401003.

The spelling of 52001891 in words is "fifty-two million, one thousand, eight hundred ninety-one".