53170812 has 18 divisors (see below), whose sum is σ = 134404088. Its totient is φ = 17723592.

The previous prime is 53170807. The next prime is 53170829. The reversal of 53170812 is 21807135.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 738448 + ... + 738519.

Almost surely, 2^53170812 is an apocalyptic number.

It is an amenable number.

53170812 is an abundant number, since it is smaller than the sum of its proper divisors (81233276).

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

53170812 is a wasteful number, since it uses less digits than its factorization.

53170812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476977 (or 1476972 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 53170812 is about 7291.8318686048. The cubic root of 53170812 is about 376.0316764471.

Adding to 53170812 its reverse (21807135), we get a palindrome (74977947).

The spelling of 53170812 in words is "fifty-three million, one hundred seventy thousand, eight hundred twelve".