53648081 has 4 divisors (see below), whose sum is σ = 54201252. Its totient is φ = 53094912.

The previous prime is 53648053. The next prime is 53648087. The reversal of 53648081 is 18084635.

53648081 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.

It can be written as a sum of positive squares in 2 ways, for example, as 43020481 + 10627600 = 6559^2 + 3260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53648081 is a prime.

It is a super-2 number, since 2×53648081² = 5756233189965122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53648087) 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, 276440 + ... + 276633.

It is an arithmetic number, because the mean of its divisors is an integer number (13550313).

Almost surely, 2^53648081 is an apocalyptic number.

It is an amenable number.

53648081 is a deficient number, since it is larger than the sum of its proper divisors (553171).

53648081 is an equidigital number, since it uses as much as digits as its factorization.

53648081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553170.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 53648081 is about 7324.4850330928. The cubic root of 53648081 is about 377.1534319084.

The spelling of 53648081 in words is "fifty-three million, six hundred forty-eight thousand, eighty-one".