53281692 has 48 divisors (see below), whose sum is σ = 138673920. Its totient is φ = 17691696.

The previous prime is 53281633. The next prime is 53281693. The reversal of 53281692 is 29618235.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53281693) 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, 32353 + ... + 33959.

It is an arithmetic number, because the mean of its divisors is an integer number (2889040).

Almost surely, 2^53281692 is an apocalyptic number.

It is an amenable number.

53281692 is an abundant number, since it is smaller than the sum of its proper divisors (85392228).

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

53281692 is a wasteful number, since it uses less digits than its factorization.

53281692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927 (or 1919 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 53281692 is about 7299.4309367238. The cubic root of 53281692 is about 376.2928814310.

The spelling of 53281692 in words is "fifty-three million, two hundred eighty-one thousand, six hundred ninety-two".