53721332 has 24 divisors (see below), whose sum is σ = 107728320. Its totient is φ = 22962240.

The previous prime is 53721323. The next prime is 53721347. The reversal of 53721332 is 23312735.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9107 + ... + 13797.

It is an arithmetic number, because the mean of its divisors is an integer number (4488680).

Almost surely, 2^53721332 is an apocalyptic number.

It is an amenable number.

53721332 is an abundant number, since it is smaller than the sum of its proper divisors (54006988).

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

53721332 is a wasteful number, since it uses less digits than its factorization.

53721332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111 (or 5109 counting only the distinct ones).

The product of its digits is 3780, while the sum is 26.

The square root of 53721332 is about 7329.4837471680. The cubic root of 53721332 is about 377.3250087300.

The spelling of 53721332 in words is "fifty-three million, seven hundred twenty-one thousand, three hundred thirty-two".