53931481 has 16 divisors (see below), whose sum is σ = 59673600. Its totient is φ = 48513168.

The previous prime is 53931473. The next prime is 53931499. The reversal of 53931481 is 18413935.

It is a cyclic number.

It is not a de Polignac number, because 53931481 - 2³ = 53931473 is a prime.

It is a super-2 number, since 2×53931481² = 5817209285706722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53931401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72610 + ... + 73348.

It is an arithmetic number, because the mean of its divisors is an integer number (3729600).

Almost surely, 2^53931481 is an apocalyptic number.

It is an amenable number.

53931481 is a deficient number, since it is larger than the sum of its proper divisors (5742119).

53931481 is a wasteful number, since it uses less digits than its factorization.

53931481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948.

The product of its digits is 12960, while the sum is 34.

The square root of 53931481 is about 7343.8056210660. The cubic root of 53931481 is about 377.8163796547.

The spelling of 53931481 in words is "fifty-three million, nine hundred thirty-one thousand, four hundred eighty-one".