53308533 has 4 divisors (see below), whose sum is σ = 71078048. Its totient is φ = 35539020.

The previous prime is 53308531. The next prime is 53308553. The reversal of 53308533 is 33580335.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53308533 - 2¹ = 53308531 is a prime.

It is a super-2 number, since 2×53308533² = 5683599381224178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53308533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53308531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8884753 + ... + 8884758.

It is an arithmetic number, because the mean of its divisors is an integer number (17769512).

Almost surely, 2^53308533 is an apocalyptic number.

It is an amenable number.

53308533 is a deficient number, since it is larger than the sum of its proper divisors (17769515).

53308533 is a wasteful number, since it uses less digits than its factorization.

53308533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17769514.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 53308533 is about 7301.2692732154. The cubic root of 53308533 is about 376.3560574885.

Adding to 53308533 its reverse (33580335), we get a palindrome (86888868).

The spelling of 53308533 in words is "fifty-three million, three hundred eight thousand, five hundred thirty-three".