52028391 has 4 divisors (see below), whose sum is σ = 69371192. Its totient is φ = 34685592.

The previous prime is 52028377. The next prime is 52028393. The reversal of 52028391 is 19382025.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 52028391 - 2⁵ = 52028359 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52028393) 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, 8671396 + ... + 8671401.

It is an arithmetic number, because the mean of its divisors is an integer number (17342798).

Almost surely, 2^52028391 is an apocalyptic number.

52028391 is a deficient number, since it is larger than the sum of its proper divisors (17342801).

52028391 is a wasteful number, since it uses less digits than its factorization.

52028391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17342800.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 52028391 is about 7213.0708439610. The cubic root of 52028391 is about 373.3190326332.

The spelling of 52028391 in words is "fifty-two million, twenty-eight thousand, three hundred ninety-one".