53691712 has 56 divisors (see below), whose sum is σ = 114802920. Its totient is φ = 24821760.

The previous prime is 53691709. The next prime is 53691727. The reversal of 53691712 is 21719635.

It can be written as a sum of positive squares in 4 ways, for example, as 10342656 + 43349056 = 3216^2 + 6584^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65964 + ... + 66772.

Almost surely, 2^53691712 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 53691712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57401460).

53691712 is an abundant number, since it is smaller than the sum of its proper divisors (61111208).

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

53691712 is a wasteful number, since it uses less digits than its factorization.

53691712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 889 counting only the distinct ones).

The product of its digits is 11340, while the sum is 34.

The square root of 53691712 is about 7327.4628624102. The cubic root of 53691712 is about 377.2556481920.

The spelling of 53691712 in words is "fifty-three million, six hundred ninety-one thousand, seven hundred twelve".