53332740 has 144 divisors (see below), whose sum is σ = 177493680. Its totient is φ = 12902400.

The previous prime is 53332717. The next prime is 53332777. The reversal of 53332740 is 4723335.

It can be written as a sum of positive squares in 8 ways, for example, as 3968064 + 49364676 = 1992^2 + 7026^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88440 + ... + 89040.

It is an arithmetic number, because the mean of its divisors is an integer number (1232595).

Almost surely, 2^53332740 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 53332740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88746840).

53332740 is an abundant number, since it is smaller than the sum of its proper divisors (124160940).

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

53332740 is a wasteful number, since it uses less digits than its factorization.

53332740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 27.

The square root of 53332740 is about 7302.9268105329. The cubic root of 53332740 is about 376.4130156771.

The spelling of 53332740 in words is "fifty-three million, three hundred thirty-two thousand, seven hundred forty".