52393889 has 4 divisors (see below), whose sum is σ = 52683540. Its totient is φ = 52104240.

The previous prime is 52393879. The next prime is 52393897. The reversal of 52393889 is 98839325.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28462225 + 23931664 = 5335^2 + 4892^2 .

It is a cyclic number.

It is not a de Polignac number, because 52393889 - 2¹² = 52389793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52393879) 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, 144554 + ... + 144915.

It is an arithmetic number, because the mean of its divisors is an integer number (13170885).

Almost surely, 2^52393889 is an apocalyptic number.

It is an amenable number.

52393889 is a deficient number, since it is larger than the sum of its proper divisors (289651).

52393889 is a wasteful number, since it uses less digits than its factorization.

52393889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289650.

The product of its digits is 466560, while the sum is 47.

The square root of 52393889 is about 7238.3623147781. The cubic root of 52393889 is about 374.1911788171.

The spelling of 52393889 in words is "fifty-two million, three hundred ninety-three thousand, eight hundred eighty-nine".