52549440 has 224 divisors, whose sum is σ = 182392320. Its totient is φ = 12773376.

The previous prime is 52549439. The next prime is 52549463. The reversal of 52549440 is 4494525.

It is a super-2 number, since 2×52549440² = 5522887288627200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 784287 + ... + 784353.

Almost surely, 2^52549440 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 52549440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91196160).

52549440 is an abundant number, since it is smaller than the sum of its proper divisors (129842880).

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

52549440 is a wasteful number, since it uses less digits than its factorization.

52549440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 52549440 is about 7249.0992543902. The cubic root of 52549440 is about 374.5611221191.

The spelling of 52549440 in words is "fifty-two million, five hundred forty-nine thousand, four hundred forty".