53088721 has 8 divisors (see below), whose sum is σ = 60730560. Its totient is φ = 45461328.

The previous prime is 53088719. The next prime is 53088757. The reversal of 53088721 is 12788035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53088721 - 2¹ = 53088719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53088701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5970 + ... + 11908.

It is an arithmetic number, because the mean of its divisors is an integer number (7591320).

Almost surely, 2^53088721 is an apocalyptic number.

It is an amenable number.

53088721 is a deficient number, since it is larger than the sum of its proper divisors (7641839).

53088721 is a wasteful number, since it uses less digits than its factorization.

53088721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7223.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 53088721 is about 7286.2007246575. The cubic root of 53088721 is about 375.8380569588.

The spelling of 53088721 in words is "fifty-three million, eighty-eight thousand, seven hundred twenty-one".