53085864 has 64 divisors (see below), whose sum is σ = 143740800. Its totient is φ = 16240896.

The previous prime is 53085841. The next prime is 53085911. The reversal of 53085864 is 46858035.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71077 + ... + 71819.

It is an arithmetic number, because the mean of its divisors is an integer number (2245950).

Almost surely, 2^53085864 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 53085864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71870400).

53085864 is an abundant number, since it is smaller than the sum of its proper divisors (90654936).

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

53085864 is a wasteful number, since it uses less digits than its factorization.

53085864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 53085864 is about 7286.0046664822. The cubic root of 53085864 is about 375.8313148576.

The spelling of 53085864 in words is "fifty-three million, eighty-five thousand, eight hundred sixty-four".