52525252 has 48 divisors (see below), whose sum is σ = 102079152. Its totient is φ = 23500800.

The previous prime is 52525201. The next prime is 52525259. The reversal of 52525252 is 25252525.

It can be written as a sum of positive squares in 8 ways, for example, as 1602756 + 50922496 = 1266^2 + 7136^2 .

It is an alternating number because its digits alternate between odd and even.

52525252 is an undulating number in base 10.

52525252 is a modest number, since divided by 525252 gives 52 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 52525252.

It is not an unprimeable number, because it can be changed into a prime (52525259) 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 15 ways as a sum of consecutive naturals, for example, 383328 + ... + 383464.

It is an arithmetic number, because the mean of its divisors is an integer number (2126649).

Almost surely, 2^52525252 is an apocalyptic number.

52525252 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

52525252 is a deficient number, since it is larger than the sum of its proper divisors (49553900).

52525252 is a wasteful number, since it uses less digits than its factorization.

52525252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 326 counting only the distinct ones).

The product of its digits is 10000, while the sum is 28.

The square root of 52525252 is about 7247.4307171576. The cubic root of 52525252 is about 374.5036443431.

Adding to 52525252 its reverse (25252525), we get a palindrome (77777777).

The spelling of 52525252 in words is "fifty-two million, five hundred twenty-five thousand, two hundred fifty-two".