53721416 has 32 divisors (see below), whose sum is σ = 115352640. Its totient is φ = 22976448.

The previous prime is 53721403. The next prime is 53721431. The reversal of 53721416 is 61412735.

53721416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 52526 + ... + 53538.

It is an arithmetic number, because the mean of its divisors is an integer number (3604770).

Almost surely, 2^53721416 is an apocalyptic number.

53721416 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

53721416 is an abundant number, since it is smaller than the sum of its proper divisors (61631224).

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

53721416 is a wasteful number, since it uses less digits than its factorization.

53721416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973 (or 1969 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 53721416 is about 7329.4894774466. The cubic root of 53721416 is about 377.3252053948.

The spelling of 53721416 in words is "fifty-three million, seven hundred twenty-one thousand, four hundred sixteen".