53852721 has 16 divisors (see below), whose sum is σ = 79215360. Its totient is φ = 32330880.

The previous prime is 53852713. The next prime is 53852731. The reversal of 53852721 is 12725835.

It is not a de Polignac number, because 53852721 - 2³ = 53852713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53852731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15241 + ... + 18438.

It is an arithmetic number, because the mean of its divisors is an integer number (4950960).

Almost surely, 2^53852721 is an apocalyptic number.

It is an amenable number.

53852721 is a deficient number, since it is larger than the sum of its proper divisors (25362639).

53852721 is a wasteful number, since it uses less digits than its factorization.

53852721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33736.

The product of its digits is 16800, while the sum is 33.

The square root of 53852721 is about 7338.4413195174. The cubic root of 53852721 is about 377.6323726233.

The spelling of 53852721 in words is "fifty-three million, eight hundred fifty-two thousand, seven hundred twenty-one".