53587121 has 4 divisors (see below), whose sum is σ = 61242432. Its totient is φ = 45931812.

The previous prime is 53587109. The next prime is 53587147. The reversal of 53587121 is 12178535.

53587121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12178535 = 5 ⋅2435707.

It is a cyclic number.

It is not a de Polignac number, because 53587121 - 2⁶ = 53587057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53587021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3827645 + ... + 3827658.

It is an arithmetic number, because the mean of its divisors is an integer number (15310608).

Almost surely, 2^53587121 is an apocalyptic number.

It is an amenable number.

53587121 is a deficient number, since it is larger than the sum of its proper divisors (7655311).

53587121 is an equidigital number, since it uses as much as digits as its factorization.

53587121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7655310.

The product of its digits is 8400, while the sum is 32.

The square root of 53587121 is about 7320.3224655749. The cubic root of 53587121 is about 377.0105253554.

The spelling of 53587121 in words is "fifty-three million, five hundred eighty-seven thousand, one hundred twenty-one".