53691280 has 20 divisors (see below), whose sum is σ = 124832412. Its totient is φ = 21476480.

The previous prime is 53691277. The next prime is 53691293. The reversal of 53691280 is 8219635.

It can be written as a sum of positive squares in 2 ways, for example, as 12166144 + 41525136 = 3488^2 + 6444^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335491 + ... + 335650.

Almost surely, 2^53691280 is an apocalyptic number.

It is an amenable number.

53691280 is an abundant number, since it is smaller than the sum of its proper divisors (71141132).

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

53691280 is a wasteful number, since it uses less digits than its factorization.

53691280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671154 (or 671148 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 53691280 is about 7327.4333842076. The cubic root of 53691280 is about 377.2546363979.

The spelling of 53691280 in words is "fifty-three million, six hundred ninety-one thousand, two hundred eighty".