53533420 has 48 divisors (see below), whose sum is σ = 121383360. Its totient is φ = 19771136.

The previous prime is 53533399. The next prime is 53533429. The reversal of 53533420 is 2433535.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (53533429) 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, 11334 + ... + 15346.

It is an arithmetic number, because the mean of its divisors is an integer number (2528820).

Almost surely, 2^53533420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53533420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60691680).

53533420 is an abundant number, since it is smaller than the sum of its proper divisors (67849940).

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

53533420 is a wasteful number, since it uses less digits than its factorization.

53533420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074 (or 4072 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 53533420 is about 7316.6536066702. The cubic root of 53533420 is about 376.8845460245.

Adding to 53533420 its reverse (2433535), we get a palindrome (55966955).

The spelling of 53533420 in words is "fifty-three million, five hundred thirty-three thousand, four hundred twenty".