52279739 has 4 divisors (see below), whose sum is σ = 52411824. Its totient is φ = 52147656.

The previous prime is 52279727. The next prime is 52279741. The reversal of 52279739 is 93797225.

It is a happy number.

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 52279739 - 2¹⁶ = 52214203 is a prime.

It is a super-2 number, since 2×52279739² = 5466342219816242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52279739.

It is not an unprimeable number, because it can be changed into a prime (52278739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65447 + ... + 66240.

It is an arithmetic number, because the mean of its divisors is an integer number (13102956).

Almost surely, 2^52279739 is an apocalyptic number.

52279739 is a deficient number, since it is larger than the sum of its proper divisors (132085).

52279739 is a wasteful number, since it uses less digits than its factorization.

52279739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132084.

The product of its digits is 238140, while the sum is 44.

The square root of 52279739 is about 7230.4729444207. The cubic root of 52279739 is about 373.9192324661.

The spelling of 52279739 in words is "fifty-two million, two hundred seventy-nine thousand, seven hundred thirty-nine".