52978265 has 8 divisors (see below), whose sum is σ = 65292360. Its totient is φ = 41236992.

The previous prime is 52978253. The next prime is 52978267. The reversal of 52978265 is 56287925.

It can be written as a sum of positive squares in 4 ways, for example, as 33512521 + 19465744 = 5789^2 + 4412^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52978265 - 2⁴ = 52978249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52978267) 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 7 ways as a sum of consecutive naturals, for example, 143000 + ... + 143369.

It is an arithmetic number, because the mean of its divisors is an integer number (8161545).

Almost surely, 2^52978265 is an apocalyptic number.

It is an amenable number.

52978265 is a deficient number, since it is larger than the sum of its proper divisors (12314095).

52978265 is a wasteful number, since it uses less digits than its factorization.

52978265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286411.

The product of its digits is 302400, while the sum is 44.

The square root of 52978265 is about 7278.6169702767. The cubic root of 52978265 is about 375.5772206838.

The spelling of 52978265 in words is "fifty-two million, nine hundred seventy-eight thousand, two hundred sixty-five".