53316481 has 2 divisors, whose sum is σ = 53316482. Its totient is φ = 53316480.

The previous prime is 53316469. The next prime is 53316509. The reversal of 53316481 is 18461335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49280400 + 4036081 = 7020^2 + 2009^2 .

It is a cyclic number.

It is not a de Polignac number, because 53316481 - 2¹¹ = 53314433 is a prime.

It is a super-2 number, since 2×53316481² = 5685294292446722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53316581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26658240 + 26658241.

It is an arithmetic number, because the mean of its divisors is an integer number (26658241).

Almost surely, 2^53316481 is an apocalyptic number.

It is an amenable number.

53316481 is a deficient number, since it is larger than the sum of its proper divisors (1).

53316481 is an equidigital number, since it uses as much as digits as its factorization.

53316481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 53316481 is about 7301.8135418538. The cubic root of 53316481 is about 376.3747607437.

The spelling of 53316481 in words is "fifty-three million, three hundred sixteen thousand, four hundred eighty-one".