53011660 has 48 divisors (see below), whose sum is σ = 122181696. Its totient is φ = 19199232.

The previous prime is 53011657. The next prime is 53011669. The reversal of 53011660 is 6611035.

It is not an unprimeable number, because it can be changed into a prime (53011669) 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, 11857 + ... + 15703.

It is an arithmetic number, because the mean of its divisors is an integer number (2545452).

Almost surely, 2^53011660 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 53011660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61090848).

53011660 is an abundant number, since it is smaller than the sum of its proper divisors (69170036).

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

53011660 is a wasteful number, since it uses less digits than its factorization.

53011660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3922 (or 3920 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 53011660 is about 7280.9106573285. The cubic root of 53011660 is about 375.6561194978.

Adding to 53011660 its reverse (6611035), we get a palindrome (59622695).

The spelling of 53011660 in words is "fifty-three million, eleven thousand, six hundred sixty".