53987071 has 2 divisors, whose sum is σ = 53987072. Its totient is φ = 53987070.

The previous prime is 53987069. The next prime is 53987083. The reversal of 53987071 is 17078935.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53987071 - 2¹ = 53987069 is a prime.

Together with 53987069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53987041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26993535 + 26993536.

It is an arithmetic number, because the mean of its divisors is an integer number (26993536).

Almost surely, 2^53987071 is an apocalyptic number.

53987071 is a deficient number, since it is larger than the sum of its proper divisors (1).

53987071 is an equidigital number, since it uses as much as digits as its factorization.

53987071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 53987071 is about 7347.5894686625. The cubic root of 53987071 is about 377.9461467843.

The spelling of 53987071 in words is "fifty-three million, nine hundred eighty-seven thousand, seventy-one".