53030340 has 72 divisors (see below), whose sum is σ = 175488768. Its totient is φ = 12855360.

The previous prime is 53030317. The next prime is 53030347. The reversal of 53030340 is 4303035.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (53030347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11412 + ... + 15371.

It is an arithmetic number, because the mean of its divisors is an integer number (2437344).

Almost surely, 2^53030340 is an apocalyptic number.

It is an amenable number.

53030340 is an abundant number, since it is smaller than the sum of its proper divisors (122458428).

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

53030340 is a wasteful number, since it uses less digits than its factorization.

53030340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26809 (or 26804 counting only the distinct ones).

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

The square root of 53030340 is about 7282.1933509074. The cubic root of 53030340 is about 375.7002382963.

Adding to 53030340 its reverse (4303035), we get a palindrome (57333375).

The spelling of 53030340 in words is "fifty-three million, thirty thousand, three hundred forty".