53033340 has 24 divisors (see below), whose sum is σ = 148493520. Its totient is φ = 14142208.

The previous prime is 53033333. The next prime is 53033341. The reversal of 53033340 is 4333035.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53033341) 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, 441885 + ... + 442004.

It is an arithmetic number, because the mean of its divisors is an integer number (6187230).

Almost surely, 2^53033340 is an apocalyptic number.

It is an amenable number.

53033340 is an abundant number, since it is smaller than the sum of its proper divisors (95460180).

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

53033340 is a wasteful number, since it uses less digits than its factorization.

53033340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883901 (or 883899 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 21.

The square root of 53033340 is about 7282.3993298912. The cubic root of 53033340 is about 375.7073227909.

Adding to 53033340 its reverse (4333035), we get a palindrome (57366375).

The spelling of 53033340 in words is "fifty-three million, thirty-three thousand, three hundred forty".