53331523 has 4 divisors (see below), whose sum is σ = 60950320. Its totient is φ = 45712728.

The previous prime is 53331521. The next prime is 53331527. The reversal of 53331523 is 32513335.

It is a happy number.

53331523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32513335 = 5 ⋅6502667.

It is a cyclic number.

It is not a de Polignac number, because 53331523 - 2¹ = 53331521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53331521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3809388 + ... + 3809401.

It is an arithmetic number, because the mean of its divisors is an integer number (15237580).

Almost surely, 2^53331523 is an apocalyptic number.

53331523 is a deficient number, since it is larger than the sum of its proper divisors (7618797).

53331523 is an equidigital number, since it uses as much as digits as its factorization.

53331523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7618796.

The product of its digits is 4050, while the sum is 25.

The square root of 53331523 is about 7302.8434873000. The cubic root of 53331523 is about 376.4101525320.

Adding to 53331523 its reverse (32513335), we get a palindrome (85844858).

The spelling of 53331523 in words is "fifty-three million, three hundred thirty-one thousand, five hundred twenty-three".