52645331 has 4 divisors (see below), whose sum is σ = 52731000. Its totient is φ = 52559664.

The previous prime is 52645309. The next prime is 52645349. The reversal of 52645331 is 13354625.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52645331 - 2¹⁸ = 52383187 is a prime.

It is a super-3 number, since 3×52645331³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52645294 and 52645303.

It is not an unprimeable number, because it can be changed into a prime (52645301) 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, 41906 + ... + 43143.

It is an arithmetic number, because the mean of its divisors is an integer number (13182750).

Almost surely, 2^52645331 is an apocalyptic number.

52645331 is a deficient number, since it is larger than the sum of its proper divisors (85669).

52645331 is an equidigital number, since it uses as much as digits as its factorization.

52645331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85668.

The product of its digits is 10800, while the sum is 29.

The square root of 52645331 is about 7255.7102340157. The cubic root of 52645331 is about 374.7888138308.

Adding to 52645331 its reverse (13354625), we get a palindrome (65999956).

The spelling of 52645331 in words is "fifty-two million, six hundred forty-five thousand, three hundred thirty-one".