52505242 has 4 divisors (see below), whose sum is σ = 78757866. Its totient is φ = 26252620.

The previous prime is 52505209. The next prime is 52505249. The reversal of 52505242 is 24250525.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 47210641 + 5294601 = 6871^2 + 2301^2 .

It is not an unprimeable number, because it can be changed into a prime (52505249) 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 as a sum of consecutive naturals, namely, 13126309 + ... + 13126312.

Almost surely, 2^52505242 is an apocalyptic number.

52505242 is a deficient number, since it is larger than the sum of its proper divisors (26252624).

52505242 is a wasteful number, since it uses less digits than its factorization.

52505242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26252623.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 52505242 is about 7246.0500964318. The cubic root of 52505242 is about 374.4560813808.

Adding to 52505242 its reverse (24250525), we get a palindrome (76755767).

The spelling of 52505242 in words is "fifty-two million, five hundred five thousand, two hundred forty-two".