52001389 has 4 divisors (see below), whose sum is σ = 56728800. Its totient is φ = 47273980.

The previous prime is 52001333. The next prime is 52001399. The reversal of 52001389 is 98310025.

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 52001389 - 2⁹ = 52000877 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 (52001329) 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, 2363689 + ... + 2363710.

It is an arithmetic number, because the mean of its divisors is an integer number (14182200).

Almost surely, 2^52001389 is an apocalyptic number.

It is an amenable number.

52001389 is a deficient number, since it is larger than the sum of its proper divisors (4727411).

52001389 is a wasteful number, since it uses less digits than its factorization.

52001389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4727410.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 52001389 is about 7211.1988601064. The cubic root of 52001389 is about 373.2544390226.

The spelling of 52001389 in words is "fifty-two million, one thousand, three hundred eighty-nine".