53251620 has 48 divisors (see below), whose sum is σ = 152748288. Its totient is φ = 13853440.

The previous prime is 53251619. The next prime is 53251643. The reversal of 53251620 is 2615235.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8364 + ... + 13283.

It is an arithmetic number, because the mean of its divisors is an integer number (3182256).

Almost surely, 2^53251620 is an apocalyptic number.

It is an amenable number.

53251620 is an abundant number, since it is smaller than the sum of its proper divisors (99496668).

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

53251620 is a wasteful number, since it uses less digits than its factorization.

53251620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21700 (or 21698 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 53251620 is about 7297.3707593900. The cubic root of 53251620 is about 376.2220753145. Note that the first 3 decimals are identical.

Adding to 53251620 its reverse (2615235), we get a palindrome (55866855).

The spelling of 53251620 in words is "fifty-three million, two hundred fifty-one thousand, six hundred twenty".