52605240 has 32 divisors (see below), whose sum is σ = 157816080. Its totient is φ = 14028032.

The previous prime is 52605221. The next prime is 52605247. The reversal of 52605240 is 4250625.

It is a super-2 number, since 2×52605240² = 5534622550915200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 52605240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52605247) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 219069 + ... + 219308.

Almost surely, 2^52605240 is an apocalyptic number.

It is an amenable number.

52605240 is an abundant number, since it is smaller than the sum of its proper divisors (105210840).

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

52605240 is a wasteful number, since it uses less digits than its factorization.

52605240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438391 (or 438387 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 52605240 is about 7252.9469872597. The cubic root of 52605240 is about 374.6936520262.

Adding to 52605240 its reverse (4250625), we get a palindrome (56855865).

The spelling of 52605240 in words is "fifty-two million, six hundred five thousand, two hundred forty".