53440772 has 48 divisors (see below), whose sum is σ = 119011200. Its totient is φ = 20815200.

The previous prime is 53440771. The next prime is 53440789. The reversal of 53440772 is 27704435.

It is a super-2 number, since 2×53440772² = 5711832223911968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53440771) 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, 13322 + ... + 16862.

It is an arithmetic number, because the mean of its divisors is an integer number (2479400).

Almost surely, 2^53440772 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 53440772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59505600).

53440772 is an abundant number, since it is smaller than the sum of its proper divisors (65570428).

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

53440772 is a wasteful number, since it uses less digits than its factorization.

53440772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577 (or 3561 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 53440772 is about 7310.3195552589. The cubic root of 53440772 is about 376.6670011570.

The spelling of 53440772 in words is "fifty-three million, four hundred forty thousand, seven hundred seventy-two".