52978339 has 4 divisors (see below), whose sum is σ = 54410224. Its totient is φ = 51546456.

The previous prime is 52978337. The next prime is 52978351. The reversal of 52978339 is 93387925.

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 52978339 - 2¹ = 52978337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52978337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715887 + ... + 715960.

It is an arithmetic number, because the mean of its divisors is an integer number (13602556).

Almost surely, 2^52978339 is an apocalyptic number.

52978339 is a deficient number, since it is larger than the sum of its proper divisors (1431885).

52978339 is a wasteful number, since it uses less digits than its factorization.

52978339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431884.

The product of its digits is 408240, while the sum is 46.

The square root of 52978339 is about 7278.6220536582. The cubic root of 52978339 is about 375.5773955524.

The spelling of 52978339 in words is "fifty-two million, nine hundred seventy-eight thousand, three hundred thirty-nine".