52213530 has 16 divisors (see below), whose sum is σ = 125312544. Its totient is φ = 13923600.

The previous prime is 52213439. The next prime is 52213531. The reversal of 52213530 is 3531225.

It is a junction number, because it is equal to n+sod(n) for n = 52213497 and 52213506.

It is not an unprimeable number, because it can be changed into a prime (52213531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 870196 + ... + 870255.

It is an arithmetic number, because the mean of its divisors is an integer number (7832034).

Almost surely, 2^52213530 is an apocalyptic number.

52213530 is an abundant number, since it is smaller than the sum of its proper divisors (73099014).

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

52213530 is a wasteful number, since it uses less digits than its factorization.

52213530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740461.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 52213530 is about 7225.8930243950. The cubic root of 52213530 is about 373.7613173905.

Adding to 52213530 its reverse (3531225), we get a palindrome (55744755).

The spelling of 52213530 in words is "fifty-two million, two hundred thirteen thousand, five hundred thirty".