53051688 has 48 divisors (see below), whose sum is σ = 144043380. Its totient is φ = 17639424.

The previous prime is 53051683. The next prime is 53051689. The reversal of 53051688 is 88615035.

It can be written as a sum of positive squares in 2 ways, for example, as 43797924 + 9253764 = 6618^2 + 3042^2 .

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

It is not an unprimeable number, because it can be changed into a prime (53051683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40906 + ... + 42182.

Almost surely, 2^53051688 is an apocalyptic number.

It is an amenable number.

53051688 is an abundant number, since it is smaller than the sum of its proper divisors (90991692).

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

53051688 is a wasteful number, since it uses less digits than its factorization.

53051688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866 (or 1859 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 53051688 is about 7283.6589705999. The cubic root of 53051688 is about 375.7506457466.

The spelling of 53051688 in words is "fifty-three million, fifty-one thousand, six hundred eighty-eight".