53721612 has 36 divisors (see below), whose sum is σ = 155196496. Its totient is φ = 15348960.

The previous prime is 53721599. The next prime is 53721637. The reversal of 53721612 is 21612735.

It is a happy number.

53721612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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 11 ways as a sum of consecutive naturals, for example, 106339 + ... + 106842.

Almost surely, 2^53721612 is an apocalyptic number.

It is an amenable number.

53721612 is an abundant number, since it is smaller than the sum of its proper divisors (101474884).

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

53721612 is a wasteful number, since it uses less digits than its factorization.

53721612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213198 (or 213193 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 53721612 is about 7329.5028480791. The cubic root of 53721612 is about 377.3256642786.

The spelling of 53721612 in words is "fifty-three million, seven hundred twenty-one thousand, six hundred twelve".