52399385 has 4 divisors (see below), whose sum is σ = 62879268. Its totient is φ = 41919504.

The previous prime is 52399381. The next prime is 52399409. The reversal of 52399385 is 58399325.

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 25938649 + 26460736 = 5093^2 + 5144^2 .

It is a cyclic number.

It is not a de Polignac number, because 52399385 - 2² = 52399381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52399381) 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, 5239934 + ... + 5239943.

It is an arithmetic number, because the mean of its divisors is an integer number (15719817).

Almost surely, 2^52399385 is an apocalyptic number.

It is an amenable number.

52399385 is a deficient number, since it is larger than the sum of its proper divisors (10479883).

52399385 is a wasteful number, since it uses less digits than its factorization.

52399385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10479882.

The product of its digits is 291600, while the sum is 44.

The square root of 52399385 is about 7238.7419487090. The cubic root of 52399385 is about 374.2042622946.

The spelling of 52399385 in words is "fifty-two million, three hundred ninety-nine thousand, three hundred eighty-five".