52515330 has 32 divisors (see below), whose sum is σ = 144042624. Its totient is φ = 12003456.

The previous prime is 52515319. The next prime is 52515343. The reversal of 52515330 is 3351525.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52515330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124827 + ... + 125246.

It is an arithmetic number, because the mean of its divisors is an integer number (4501332).

Almost surely, 2^52515330 is an apocalyptic number.

52515330 is an abundant number, since it is smaller than the sum of its proper divisors (91527294).

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

52515330 is a wasteful number, since it uses less digits than its factorization.

52515330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250090.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 52515330 is about 7246.7461663839. The cubic root of 52515330 is about 374.4800616597.

Adding to 52515330 its reverse (3351525), we get a palindrome (55866855).

The spelling of 52515330 in words is "fifty-two million, five hundred fifteen thousand, three hundred thirty".