53687240 has 16 divisors (see below), whose sum is σ = 120796380. Its totient is φ = 21474880.

The previous prime is 53687219. The next prime is 53687279. The reversal of 53687240 is 4278635.

It is a happy number.

53687240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 49758916 + 3928324 = 7054^2 + 1982^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53687240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671051 + ... + 671130.

Almost surely, 2^53687240 is an apocalyptic number.

It is an amenable number.

53687240 is an abundant number, since it is smaller than the sum of its proper divisors (67109140).

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

53687240 is a wasteful number, since it uses less digits than its factorization.

53687240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342192 (or 1342188 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 53687240 is about 7327.1577026839. The cubic root of 53687240 is about 377.2451739864.

The spelling of 53687240 in words is "fifty-three million, six hundred eighty-seven thousand, two hundred forty".