53649616 has 40 divisors (see below), whose sum is σ = 114189120. Its totient is φ = 24304896.

The previous prime is 53649613. The next prime is 53649641. The reversal of 53649616 is 61694635.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53649613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3156 + ... + 10828.

It is an arithmetic number, because the mean of its divisors is an integer number (2854728).

Almost surely, 2^53649616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53649616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57094560).

53649616 is an abundant number, since it is smaller than the sum of its proper divisors (60539504).

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

53649616 is a wasteful number, since it uses less digits than its factorization.

53649616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7723 (or 7717 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 53649616 is about 7324.5898178669. The cubic root of 53649616 is about 377.1570289615.

The spelling of 53649616 in words is "fifty-three million, six hundred forty-nine thousand, six hundred sixteen".