53993871 has 12 divisors (see below), whose sum is σ = 80880072. Its totient is φ = 35995752.

The previous prime is 53993861. The next prime is 53993899. The reversal of 53993871 is 17839935.

It is a happy number.

It is not a de Polignac number, because 53993871 - 2⁷ = 53993743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53993831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110856 + ... + 111341.

It is an arithmetic number, because the mean of its divisors is an integer number (6740006).

Almost surely, 2^53993871 is an apocalyptic number.

53993871 is a deficient number, since it is larger than the sum of its proper divisors (26886201).

53993871 is an equidigital number, since it uses as much as digits as its factorization.

53993871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222212 (or 222200 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 53993871 is about 7348.0521908871. The cubic root of 53993871 is about 377.9620143235.

The spelling of 53993871 in words is "fifty-three million, nine hundred ninety-three thousand, eight hundred seventy-one".