52649660 has 48 divisors (see below), whose sum is σ = 127694784. Its totient is φ = 17860608.

The previous prime is 52649657. The next prime is 52649669. The reversal of 52649660 is 6694625.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52649669) 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, 11642 + ... + 15518.

It is an arithmetic number, because the mean of its divisors is an integer number (2660308).

Almost surely, 2^52649660 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 52649660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63847392).

52649660 is an abundant number, since it is smaller than the sum of its proper divisors (75045124).

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

52649660 is a wasteful number, since it uses less digits than its factorization.

52649660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990 (or 3988 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 52649660 is about 7256.0085446477. The cubic root of 52649660 is about 374.7990864500.

The spelling of 52649660 in words is "fifty-two million, six hundred forty-nine thousand, six hundred sixty".