52215700 has 18 divisors (see below), whose sum is σ = 113308286. Its totient is φ = 20886240.

The previous prime is 52215671. The next prime is 52215707. The reversal of 52215700 is 751225.

It can be written as a sum of positive squares in 3 ways, for example, as 404496 + 51811204 = 636^2 + 7198^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52215707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260979 + ... + 261178.

Almost surely, 2^52215700 is an apocalyptic number.

52215700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

52215700 is an abundant number, since it is smaller than the sum of its proper divisors (61092586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52215700 is a wasteful number, since it uses less digits than its factorization.

52215700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522171 (or 522164 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 52215700 is about 7226.0431772859. The cubic root of 52215700 is about 373.7664951725.

Adding to 52215700 its reverse (751225), we get a palindrome (52966925).

The spelling of 52215700 in words is "fifty-two million, two hundred fifteen thousand, seven hundred".