53153646 has 64 divisors (see below), whose sum is σ = 132883968. Its totient is φ = 13799808.

The previous prime is 53153629. The next prime is 53153651. The reversal of 53153646 is 64635135.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35856 + ... + 37308.

It is an arithmetic number, because the mean of its divisors is an integer number (2076312).

Almost surely, 2^53153646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53153646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66441984).

53153646 is an abundant number, since it is smaller than the sum of its proper divisors (79730322).

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

53153646 is a wasteful number, since it uses less digits than its factorization.

53153646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545.

The product of its digits is 32400, while the sum is 33.

The square root of 53153646 is about 7290.6547031114. The cubic root of 53153646 is about 375.9912052794.

The spelling of 53153646 in words is "fifty-three million, one hundred fifty-three thousand, six hundred forty-six".