53729472 has 70 divisors (see below), whose sum is σ = 148620988. Its totient is φ = 17131136.

The previous prime is 53729453. The next prime is 53729483. The reversal of 53729472 is 27492735.

It is a super-2 number, since 2×53729472² = 5773712322797568, which contains 22 as substring.

Its product of digits (105840) is a multiple of the sum of its prime divisors (28).

It is a self number, because there is not a number n which added to its sum of digits gives 53729472.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2336053 + ... + 2336075.

Almost surely, 2^53729472 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 53729472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74310494).

53729472 is an abundant number, since it is smaller than the sum of its proper divisors (94891516).

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

53729472 is an frugal number, since it uses more digits than its factorization.

53729472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 28 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 53729472 is about 7330.0390176315. The cubic root of 53729472 is about 377.3440655326.

The spelling of 53729472 in words is "fifty-three million, seven hundred twenty-nine thousand, four hundred seventy-two".