53510816 has 36 divisors (see below), whose sum is σ = 107780778. Its totient is φ = 26151552.

The previous prime is 53510813. The next prime is 53510819. The reversal of 53510816 is 61801535.

It is an interprime number because it is at equal distance from previous prime (53510813) and next prime (53510819).

It can be written as a sum of positive squares in only one way, i.e., 43296400 + 10214416 = 6580^2 + 3196^2 .

It is not an unprimeable number, because it can be changed into a prime (53510813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70310 + ... + 71066.

Almost surely, 2^53510816 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 53510816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53890389).

53510816 is an abundant number, since it is smaller than the sum of its proper divisors (54269962).

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

53510816 is an equidigital number, since it uses as much as digits as its factorization.

53510816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 53510816 is about 7315.1087483372. The cubic root of 53510816 is about 376.8314931988.

The spelling of 53510816 in words is "fifty-three million, five hundred ten thousand, eight hundred sixteen".