53609712 has 80 divisors (see below), whose sum is σ = 152052768. Its totient is φ = 16174080.

The previous prime is 53609671. The next prime is 53609713. The reversal of 53609712 is 21790635.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53609713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32262 + ... + 33882.

Almost surely, 2^53609712 is an apocalyptic number.

53609712 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53609712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76026384).

53609712 is an abundant number, since it is smaller than the sum of its proper divisors (98443056).

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

53609712 is a wasteful number, since it uses less digits than its factorization.

53609712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 53609712 is about 7321.8653361012. The cubic root of 53609712 is about 377.0634973385.

The spelling of 53609712 in words is "fifty-three million, six hundred nine thousand, seven hundred twelve".