53991376 has 20 divisors (see below), whose sum is σ = 104723332. Its totient is φ = 26966016.

The previous prime is 53991361. The next prime is 53991401. The reversal of 53991376 is 67319935.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3240000 + 50751376 = 1800^2 + 7124^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24496 + ... + 26608.

Almost surely, 2^53991376 is an apocalyptic number.

It is an amenable number.

53991376 is a deficient number, since it is larger than the sum of its proper divisors (50731956).

53991376 is a wasteful number, since it uses less digits than its factorization.

53991376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718 (or 3712 counting only the distinct ones).

The product of its digits is 153090, while the sum is 43.

The square root of 53991376 is about 7347.8824160434. The cubic root of 53991376 is about 377.9561924914.

The spelling of 53991376 in words is "fifty-three million, nine hundred ninety-one thousand, three hundred seventy-six".