53403660 has 36 divisors (see below), whose sum is σ = 161991648. Its totient is φ = 14240928.

The previous prime is 53403659. The next prime is 53403667. The reversal of 53403660 is 6630435.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (53403667) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 148164 + ... + 148523.

It is an arithmetic number, because the mean of its divisors is an integer number (4499768).

Almost surely, 2^53403660 is an apocalyptic number.

It is an amenable number.

53403660 is an abundant number, since it is smaller than the sum of its proper divisors (108587988).

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

53403660 is a wasteful number, since it uses less digits than its factorization.

53403660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296702 (or 296697 counting only the distinct ones).

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

The square root of 53403660 is about 7307.7807848895. The cubic root of 53403660 is about 376.5797887014.

The spelling of 53403660 in words is "fifty-three million, four hundred three thousand, six hundred sixty".