53240531 has 4 divisors (see below), whose sum is σ = 53598000. Its totient is φ = 52883064.

The previous prime is 53240503. The next prime is 53240543. The reversal of 53240531 is 13504235.

53240531 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: 13504235 = 5 ⋅2700847.

It is a cyclic number.

It is not a de Polignac number, because 53240531 - 2²² = 49046227 is a prime.

It is a super-2 number, since 2×53240531² = 5669108282323922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53240497 and 53240506.

It is not an unprimeable number, because it can be changed into a prime (53240501) 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, 178511 + ... + 178808.

It is an arithmetic number, because the mean of its divisors is an integer number (13399500).

Almost surely, 2^53240531 is an apocalyptic number.

53240531 is a deficient number, since it is larger than the sum of its proper divisors (357469).

53240531 is a wasteful number, since it uses less digits than its factorization.

53240531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357468.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53240531 is about 7296.6109256284. The cubic root of 53240531 is about 376.1959589496.

Adding to 53240531 its reverse (13504235), we get a palindrome (66744766).

The spelling of 53240531 in words is "fifty-three million, two hundred forty thousand, five hundred thirty-one".