52531420 has 12 divisors (see below), whose sum is σ = 110316024. Its totient is φ = 21012560.

The previous prime is 52531403. The next prime is 52531421. The reversal of 52531420 is 2413525.

It is a junction number, because it is equal to n+sod(n) for n = 52531391 and 52531400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52531421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1313266 + ... + 1313305.

It is an arithmetic number, because the mean of its divisors is an integer number (9193002).

Almost surely, 2^52531420 is an apocalyptic number.

It is an amenable number.

52531420 is an abundant number, since it is smaller than the sum of its proper divisors (57784604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52531420 is a wasteful number, since it uses less digits than its factorization.

52531420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626580 (or 2626578 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 52531420 is about 7247.8562347773. The cubic root of 52531420 is about 374.5183029944.

Adding to 52531420 its reverse (2413525), we get a palindrome (54944945).

The spelling of 52531420 in words is "fifty-two million, five hundred thirty-one thousand, four hundred twenty".