52657605 has 144 divisors (see below), whose sum is σ = 125483904. Its totient is φ = 20079360.

The previous prime is 52657547. The next prime is 52657609. The reversal of 52657605 is 50675625.

It is not a de Polignac number, because 52657605 - 2⁹ = 52657093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52657605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52657609) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 315232 + ... + 315398.

It is an arithmetic number, because the mean of its divisors is an integer number (871416).

Almost surely, 2^52657605 is an apocalyptic number.

52657605 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52657605 is an abundant number, since it is smaller than the sum of its proper divisors (72826299).

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

52657605 is a wasteful number, since it uses less digits than its factorization.

52657605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 52657605 is about 7256.5560012998. The cubic root of 52657605 is about 374.8179382904.

The spelling of 52657605 in words is "fifty-two million, six hundred fifty-seven thousand, six hundred five".