53306420 has 12 divisors (see below), whose sum is σ = 111943524. Its totient is φ = 21322560.

The previous prime is 53306417. The next prime is 53306443. The reversal of 53306420 is 2460335.

It can be written as a sum of positive squares in 2 ways, for example, as 30228004 + 23078416 = 5498^2 + 4804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332641 + ... + 1332680.

It is an arithmetic number, because the mean of its divisors is an integer number (9328627).

Almost surely, 2^53306420 is an apocalyptic number.

It is an amenable number.

53306420 is an abundant number, since it is smaller than the sum of its proper divisors (58637104).

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

53306420 is a wasteful number, since it uses less digits than its factorization.

53306420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665330 (or 2665328 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 53306420 is about 7301.1245709137. The cubic root of 53306420 is about 376.3510848583.

Adding to 53306420 its reverse (2460335), we get a palindrome (55766755).

The spelling of 53306420 in words is "fifty-three million, three hundred six thousand, four hundred twenty".