53213430 has 16 divisors (see below), whose sum is σ = 127712304. Its totient is φ = 14190240.

The previous prime is 53213429. The next prime is 53213497. The reversal of 53213430 is 3431235.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53213397 and 53213406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886861 + ... + 886920.

It is an arithmetic number, because the mean of its divisors is an integer number (7982019).

Almost surely, 2^53213430 is an apocalyptic number.

53213430 is an abundant number, since it is smaller than the sum of its proper divisors (74498874).

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

53213430 is a wasteful number, since it uses less digits than its factorization.

53213430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773791.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 53213430 is about 7294.7535941936. The cubic root of 53213430 is about 376.1321165042.

Adding to 53213430 its reverse (3431235), we get a palindrome (56644665).

The spelling of 53213430 in words is "fifty-three million, two hundred thirteen thousand, four hundred thirty".