53305533 has 20 divisors (see below), whose sum is σ = 80053600. Its totient is φ = 35347752.

The previous prime is 53305519. The next prime is 53305541. The reversal of 53305533 is 33550335.

It is not a de Polignac number, because 53305533 - 2⁴ = 53305517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53305497 and 53305506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53305543) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14466 + ... + 17772.

It is an arithmetic number, because the mean of its divisors is an integer number (4002680).

Almost surely, 2^53305533 is an apocalyptic number.

It is an amenable number.

53305533 is a deficient number, since it is larger than the sum of its proper divisors (26748067).

53305533 is a wasteful number, since it uses less digits than its factorization.

53305533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518 (or 3509 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 27.

The square root of 53305533 is about 7301.0638265940. The cubic root of 53305533 is about 376.3489973970.

Adding to 53305533 its reverse (33550335), we get a palindrome (86855868).

The spelling of 53305533 in words is "fifty-three million, three hundred five thousand, five hundred thirty-three".