52013399 has 4 divisors (see below), whose sum is σ = 52260120. Its totient is φ = 51766680.

The previous prime is 52013389. The next prime is 52013407. The reversal of 52013399 is 99331025.

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

It is a cyclic number.

It is not a de Polignac number, because 52013399 - 2¹² = 52009303 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 (52013389) 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, 123044 + ... + 123465.

It is an arithmetic number, because the mean of its divisors is an integer number (13065030).

Almost surely, 2^52013399 is an apocalyptic number.

52013399 is a deficient number, since it is larger than the sum of its proper divisors (246721).

52013399 is a wasteful number, since it uses less digits than its factorization.

52013399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246720.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 52013399 is about 7212.0315445788. The cubic root of 52013399 is about 373.2831718497.

The spelling of 52013399 in words is "fifty-two million, thirteen thousand, three hundred ninety-nine".