53145533 has 8 divisors (see below), whose sum is σ = 61570368. Its totient is φ = 44928864.

The previous prime is 53145517. The next prime is 53145577. The reversal of 53145533 is 33554135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53145533 - 2⁴ = 53145517 is a prime.

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 = 53145496 and 53145505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53145503) 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, 51491 + ... + 52512.

It is an arithmetic number, because the mean of its divisors is an integer number (7696296).

Almost surely, 2^53145533 is an apocalyptic number.

It is an amenable number.

53145533 is a deficient number, since it is larger than the sum of its proper divisors (8424835).

53145533 is a wasteful number, since it uses less digits than its factorization.

53145533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104083.

The product of its digits is 13500, while the sum is 29.

The square root of 53145533 is about 7290.0982846598. The cubic root of 53145533 is about 375.9720747519.

Adding to 53145533 its reverse (33554135), we get a palindrome (86699668).

It can be divided in two parts, 531 and 45533, that added together give a palindrome (46064).

The spelling of 53145533 in words is "fifty-three million, one hundred forty-five thousand, five hundred thirty-three".