53721562 has 16 divisors (see below), whose sum is σ = 83063232. Its totient is φ = 26042080.

The previous prime is 53721559. The next prime is 53721589. The reversal of 53721562 is 26512735.

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, 11733 + ... + 15655.

It is an arithmetic number, because the mean of its divisors is an integer number (5191452).

Almost surely, 2^53721562 is an apocalyptic number.

53721562 is a deficient number, since it is larger than the sum of its proper divisors (29341670).

53721562 is a wasteful number, since it uses less digits than its factorization.

53721562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133.

The product of its digits is 12600, while the sum is 31.

The square root of 53721562 is about 7329.4994372058. The cubic root of 53721562 is about 377.3255472165.

The spelling of 53721562 in words is "fifty-three million, seven hundred twenty-one thousand, five hundred sixty-two".