53660340 has 48 divisors (see below), whose sum is σ = 166944960. Its totient is φ = 14309280.

The previous prime is 53660339. The next prime is 53660359. The reversal of 53660340 is 4306635.

53660340 is a `hidden beast` number, since 53 + 6 + 603 + 4 + 0 = 666.

53660340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 49146 + ... + 50225.

It is an arithmetic number, because the mean of its divisors is an integer number (3478020).

Almost surely, 2^53660340 is an apocalyptic number.

It is an amenable number.

53660340 is an abundant number, since it is smaller than the sum of its proper divisors (113284620).

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

53660340 is a wasteful number, since it uses less digits than its factorization.

53660340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99389 (or 99381 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 53660340 is about 7325.3218359332. The cubic root of 53660340 is about 377.1821572092.

Adding to 53660340 its reverse (4306635), we get a palindrome (57966975).

The spelling of 53660340 in words is "fifty-three million, six hundred sixty thousand, three hundred forty".