53331620 has 12 divisors (see below), whose sum is σ = 111996444. Its totient is φ = 21332640.

The previous prime is 53331599. The next prime is 53331631. The reversal of 53331620 is 2613335.

53331620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5914624 + 47416996 = 2432^2 + 6886^2 .

It is an unprimeable number.

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, 1333271 + ... + 1333310.

It is an arithmetic number, because the mean of its divisors is an integer number (9333037).

Almost surely, 2^53331620 is an apocalyptic number.

It is an amenable number.

53331620 is an abundant number, since it is smaller than the sum of its proper divisors (58664824).

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

53331620 is a wasteful number, since it uses less digits than its factorization.

53331620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666590 (or 2666588 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 53331620 is about 7302.8501285457. The cubic root of 53331620 is about 376.4103807383.

Adding to 53331620 its reverse (2613335), we get a palindrome (55944955).

The spelling of 53331620 in words is "fifty-three million, three hundred thirty-one thousand, six hundred twenty".