53680144 has 20 divisors (see below), whose sum is σ = 118863424. Its totient is φ = 23005728.

The previous prime is 53680129. The next prime is 53680153. The reversal of 53680144 is 44108635.

It is a happy 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, 239532 + ... + 239755.

Almost surely, 2^53680144 is an apocalyptic number.

It is an amenable number.

53680144 is an abundant number, since it is smaller than the sum of its proper divisors (65183280).

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

53680144 is a wasteful number, since it uses less digits than its factorization.

53680144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479302 (or 479296 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 53680144 is about 7326.6734607187. The cubic root of 53680144 is about 377.2285527203.

Adding to 53680144 its reverse (44108635), we get a palindrome (97788779).

It can be divided in two parts, 53680 and 144, that added together give a square (53824 = 232²).

The spelling of 53680144 in words is "fifty-three million, six hundred eighty thousand, one hundred forty-four".