53003430 has 64 divisors (see below), whose sum is σ = 142718400. Its totient is φ = 13996800.

The previous prime is 53003429. The next prime is 53003437. The reversal of 53003430 is 3430035.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53003437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28530 + ... + 30330.

It is an arithmetic number, because the mean of its divisors is an integer number (2229975).

Almost surely, 2^53003430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53003430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71359200).

53003430 is an abundant number, since it is smaller than the sum of its proper divisors (89714970).

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

53003430 is a wasteful number, since it uses less digits than its factorization.

53003430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926 (or 1920 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 53003430 is about 7280.3454588364. The cubic root of 53003430 is about 375.6366784298.

Adding to 53003430 its reverse (3430035), we get a palindrome (56433465).

The spelling of 53003430 in words is "fifty-three million, three thousand, four hundred thirty".