52503430 has 32 divisors (see below), whose sum is σ = 110525184. Its totient is φ = 17581536.

The previous prime is 52503421. The next prime is 52503433. The reversal of 52503430 is 3430525.

It is a super-2 number, since 2×52503430² = 5513220323529800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52503433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5712 + ... + 11731.

It is an arithmetic number, because the mean of its divisors is an integer number (3453912).

Almost surely, 2^52503430 is an apocalyptic number.

52503430 is an abundant number, since it is smaller than the sum of its proper divisors (58021754).

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

52503430 is a wasteful number, since it uses less digits than its factorization.

52503430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17500.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 52503430 is about 7245.9250617157. The cubic root of 52503430 is about 374.4517737333.

Adding to 52503430 its reverse (3430525), we get a palindrome (55933955).

The spelling of 52503430 in words is "fifty-two million, five hundred three thousand, four hundred thirty".